Techniques for forwarding a wireless signal using a digital repeater

ABSTRACT

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a digital repeater may receive, using a control component of the digital repeater, a configuration that indicates a digital processing operation, wherein the control component receives the configuration from a control node via a wireless control interface; receive a first signal; perform, using a repeating component of the digital repeater, the digital processing operation on the first signal to generate a second signal, wherein the second signal comprises a re-generated version of the first signal; and transmit the second signal. Numerous other aspects are provided.

CROSS-REFERENCE TO RELATED APPLICATION

This patent application claims priority to U.S. Provisional PatentApplication No. 62/706,186, filed on Aug. 4, 2020, entitled “TECHNIQUESFOR FORWARDING A WIRELESS SIGNAL USING A DIGITAL REPEATER,” and assignedto the assignee hereof. The disclosure of the prior application isconsidered part of and is incorporated by reference into this patentapplication.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wirelesscommunication and to techniques and apparatuses for forwarding awireless signal using a digital repeater.

DESCRIPTION OF RELATED ART

Wireless communication systems are widely deployed to provide varioustelecommunication services such as telephony, video, data, messaging,and broadcasts. Typical wireless communication systems may employmultiple-access technologies capable of supporting communication withmultiple users by sharing available system resources (e.g., bandwidth,transmit power, or the like). Examples of such multiple-accesstechnologies include code division multiple access (CDMA) systems, timedivision multiple access (TDMA) systems, frequency-division multipleaccess (FDMA) systems, orthogonal frequency-division multiple access(OFDMA) systems, single-carrier frequency-division multiple access(SC-FDMA) systems, time division synchronous code division multipleaccess (TD-SCDMA) systems, and Long Term Evolution (LTE).LTE/LTE-Advanced is a set of enhancements to the Universal MobileTelecommunications System (UMTS) mobile standard promulgated by theThird Generation Partnership Project (3GPP).

A wireless network may include a number of base stations (BSs) that cansupport communication for a number of user equipment (UEs). A userequipment (UE) may communicate with a base station (BS) via the downlinkand uplink. “Downlink” (or forward link) refers to the communicationlink from the BS to the UE, and “uplink” (or reverse link) refers to thecommunication link from the UE to the BS. As will be described in moredetail herein, a BS may be referred to as a Node B, a gNB, an accesspoint (AP), a radio head, a transmit receive point (TRP), a New Radio(NR) BS, a 5G Node B, or the like.

The above multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent user equipment to communicate on a municipal, national,regional, and even global level. New Radio (NR), which may also bereferred to as 5G, is a set of enhancements to the LTE mobile standardpromulgated by the Third Generation Partnership Project (3GPP). NR isdesigned to better support mobile broadband Internet access by improvingspectral efficiency, lowering costs, improving services, making use ofnew spectrum, and better integrating with other open standards usingorthogonal frequency division multiplexing (OFDM) with a cyclic prefix(CP) (CP-OFDM) on the downlink (DL), using CP-OFDM and/or SC-FDM (e.g.,also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) onthe uplink (UL), as well as supporting beamforming, multiple-inputmultiple-output (MIMO) antenna technology, and carrier aggregation. Asthe demand for mobile broadband access continues to increase, furtherimprovements in LTE, NR, and other radio access technologies remainuseful.

SUMMARY

Aspects generally include a method of wireless communication performedby a digital repeater includes: receiving, using a control component ofthe digital repeater, a configuration that indicates a digitalprocessing operation, wherein the control component receives theconfiguration from a control node via a wireless control interface;receiving a first signal; performing, using a repeating component of thedigital repeater, the digital processing operation on the first signalto generate a second signal, wherein the second signal comprises are-generated version of the first signal; and transmitting the secondsignal.

In some aspects, receiving the first signal comprises receiving amillimeter wave wireless signal.

In some aspects, the configuration indicates a beamforming configurationfor at least one of receiving the first signal or transmitting thesecond signal.

In some aspects, performing the digital processing operation comprises:obtaining a plurality of digital samples from the first signal; storingthe plurality of digital samples; and extracting a plurality of tonesfrom the plurality of digital samples.

In some aspects, the wireless control interface comprises an in-bandcontrol interface.

In some aspects, the first signal is received using a frequency, andcontrol messages are received via the in-band control interface usingthe frequency.

In some aspects, the method includes transmitting at least one controlmessage to the control node, wherein the at least one control messageindicates at least one of: a configuration of the digital repeater, acapability of the digital repeater, or a status of the digital repeater.

In some aspects, the method includes establishing, using the controlcomponent and a frequency, an access link to the control node.

In some aspects, the method includes receiving a bandwidth part (BWP)configuration that indicates a BWP corresponding to the wireless controlinterface.

In some aspects, the configuration is carried by a control messagecomprising at least one of: downlink control information (DCI), a radioresource control (RRC) message, or a medium access control (MAC) controlelement (MAC-CE).

In some aspects, the configuration is carried in a front haul physicaldownlink control channel (FH-PDCCH) control message.

In some aspects, the FH-PDCCH control message comprises downlink controlinformation scrambled by a front haul radio network temporary identifier(FH-RNTI), and the FH-RNTI is associated with the control component.

In some aspects, the wireless control interface comprises an out-of-bandcontrol interface.

In some aspects, the first signal is received using a first frequency,and control messages are received via the control interface using asecond frequency that is different than the first frequency.

In some aspects, the second frequency is lower than the first frequency.

In some aspects, the control component is based at least in part on aLong Term Evolution (LTE) narrow band Internet-of-Things (IoT) userequipment (UE).

In some aspects, the control component is based at least in part on aNew Radio (NR) sub-6 reduced capability UE.

In some aspects, the control component is based on a UE specificationthat specifies a plurality of functions supported by the UE, and thecontrol component does not support all of the plurality of functions.

In some aspects, the first signal is received using a first radio accesstechnology (RAT), and control messages are received via the controlinterface using a second RAT that is different than the first RAT.

In some aspects, the configuration is carried in a control messagecomprising at least one of: a lower-layer control message, anupper-layer control message, or an application-layer control message.

In some aspects, the method includes receiving, from the control node, acontrol message that indicates at least one of: a reception beamformingconfiguration associated with the first signal, a reception time domainresource associated with the first signal, a transmission beamformingconfiguration associated with transmitting the second signal, or atransmission time domain resource associated with transmitting thesecond signal.

In some aspects, the reception beamforming configuration indicates anindex associated with a beamforming codebook.

In some aspects, the reception beamforming configuration indicates atleast one of: a phase setting of an antenna element of the digitalrepeater, or an amplitude setting of the antenna element of the digitalrepeater.

In some aspects, the method includes transmitting a control message tothe control node, wherein the control message indicates a beamformingcapability of the digital repeater, and wherein the receptionbeamforming configuration is based at least in part on the beamformingcapability.

In some aspects, the transmission time domain resource is indicatedrelative to the reception time domain resource.

In some aspects, the transmission time domain resource is based at leastin part on a synchronization characteristic corresponding to asynchronization mode between the digital repeater and the control node.

In some aspects, the synchronization characteristic indicates asynchronous mode between the digital repeater and the control node, andthe transmission time domain resource is based at least in part on anindication of the reception time domain resource, wherein the indicationof the reception time domain resource indicates at least one of: asymbol identifier, a slot identifier, or a frame identifier.

In some aspects, the synchronization characteristic indicates anasynchronous mode between the digital repeater and the control node, andthe transmission time domain resource is based at least in part on anindication of a reference time domain resource, wherein the indicationof the reference time domain resource indicates at least one of: asymbol identifier, a slot identifier, or a frame identifier.

In some aspects, the method includes transmitting, using the controlcomponent, an additional control message to the control node, whereinthe reference time domain resource corresponds to the additional controlmessage.

In some aspects, the synchronization characteristic indicates anout-of-sync synchronization mode between the digital repeater and thecontrol node, and the transmission time domain resource is based atleast in part on a reference time domain resource, wherein the referencetime domain resource corresponds to the configuration.

In some aspects, the method includes transmitting a control message tothe control node, wherein the control message includes one or moreinformation elements (IEs), the one or more IEs indicating at least oneof: an operation supported by the digital repeater, a beamformingcodebook characteristic, a beamforming capability, a transmitter powerconfiguration, a timing configuration, a buffer status, ananalog-to-digital converter (ADC) configuration, an ADC setting, adigital-to-analog converter (DAC) configuration, a DAC setting, anin-phase and quadrature (IQ) sample compression capability, an IQ sampledecompression capability, an IQ sample compression setting, or an IQsample decompression setting.

In some aspects, the beamforming codebook characteristic indicates atleast one of: a number of transmitter beams available, a number ofreceiver beams available, a spatial quasi co-location characteristicassociated with a beam, a number of antenna arrays, a number of antennapanels, an association between a beam and an antenna array, or anassociation between a beam and an antenna panel.

In some aspects, the transmitter power configuration indicates at leastone of: a power headroom, a maximum transmitter power, a maximum gainlevel, a current gain setting, or a current transmitter power.

In some aspects, the timing configuration indicates at least one of: alevel of synchronization between the digital repeater and the controlnode, a synchronous operation supported by the digital repeater, or anasynchronous operation supported by the digital repeater.

In some aspects, the buffer status indicates at least one of: anavailable memory, a maximum buffer size, or a buffer overflow.

In some aspects, the first signal comprises at least one of: a physicaldownlink control channel (PDCCH) transmission, a physical downlinkshared channel (PDSCH) transmission, a physical uplink control channel(PUCCH) transmission, a physical uplink shared channel (PUSCH)transmission, or an acknowledgement or negative acknowledgement(ACK/NACK) feedback message.

In some aspects, the digital processing operation comprises a digitalprocessing option selected from a plurality of digital processingoptions.

In some aspects, the digital processing option is based at least in parton at least one of: time domain IQ sample buffering, tone extraction,resource element extraction, channel estimation and equalization, ordecoding the first signal.

In some aspects, the configuration comprises at least one control IE,the at least one control IE indicating: a reception configuration, abuffering configuration, a forwarding configuration, or an informationrequest.

In some aspects, the reception configuration indicates at least one of:a reception analog beamforming configuration, a time domain resourceassociated with the first signal, a frequency domain resource associatedwith the first signal, a numerology associated with the first signal, adigital receiver beamforming configuration, resource element (RE)mapping information associated with the first signal, a channelestimation configuration, a scrambling identifier associated with thefirst signal, or a coding configuration associated with the firstsignal.

In some aspects, the frequency domain resource associated with the firstsignal comprises at least one of: a center frequency, a bandwidth, or abandwidth part.

In some aspects, the numerology associated with the first signalcomprises at least one of: a cyclic prefix (CP) size, a subcarrierspacing (SCS), or a fast Fourier transform (FFT) size.

In some aspects, the RE mapping information associated with the firstsignal comprises a plurality of indices corresponding to a plurality ofoccupied tones associated with the first signal.

In some aspects, the channel estimation configuration indicates at leastone of: a resource associated with a reference signal, or aconfiguration associated with the reference signal.

In some aspects, the coding configuration indicates at least one of: amodulation and coding scheme (MCS), or a coding technique.

In some aspects, the buffering configuration indicates at least one of:an ADC setting, a DAC setting, an IQ sample compression setting, or anIQ sample decompression setting.

In some aspects, the ADC setting comprises at least one of: an ADCresolution, or a sample rate.

In some aspects, the forwarding configuration comprises at least one of:a transmission beamforming configuration, a time domain resourceassociated with transmitting the second signal, a transmission powersetting, a transmission amplification setting, a transmission centerfrequency, a numerology associated with transmitting the second signal,a digital transmitter beamforming configuration, RE mapping informationassociated with transmitting the second signal, a layer mappingconfiguration, a precoding configuration, a scrambling identifierassociated with transmitting the second signal, or a codingconfiguration associated with transmitting the second signal.

In some aspects, the numerology associated with forwarding the firstsignal comprises at least one of: a CP size, an SCS, or an FFT size.

In some aspects, the RE mapping information associated with forwardingthe first signal comprises a plurality of indices corresponding to aplurality of occupied tones associated with transmitting the secondsignal.

In some aspects, the information request comprises a request for atleast one of: a buffer status, a power status, a measurement report, acapability of the digital repeater, or a configuration of the digitalrepeater.

In some aspects, the request for the power status comprises a requestfor a power headroom of the digital repeater.

In some aspects, the request for the measurement report comprises arequest for a signal quality measurement.

In some aspects, the method includes transmitting a periodic report tothe control node, wherein the periodic report indicates at least one of:a capability of the digital repeater, or a configuration of the digitalrepeater.

In some aspects, a method of wireless communication performed by acontrol node includes: determining a configuration for a repeatingoperation that facilitates forwarding a first signal from a firstwireless node to a second wireless node, wherein the configurationindicates a digital processing operation for regenerating the firstsignal to create a second signal, and wherein the digital processingoperation comprises a digital processing option selected from aplurality of digital processing options; and transmitting theconfiguration to a control component of a digital repeater via awireless control interface.

In some aspects, the first signal comprises a millimeter wave wirelesssignal.

In some aspects, the configuration indicates a beamforming configurationfor at least one of receiving the first signal or transmitting thesecond signal.

In some aspects, the digital processing operation is configured tofacilitate extraction of a plurality of tones from the first signal.

In some aspects, the wireless control interface comprises an in-bandcontrol interface.

In some aspects, the method includes receiving at least one controlmessage from the digital repeater, wherein the at least one controlmessage indicates at least one of: a configuration of the digitalrepeater, a capability of the digital repeater, or a status of thedigital repeater.

In some aspects, the method includes establishing an access link withthe control component of the control node.

In some aspects, the method includes transmitting, to the digitalrepeater, a BWP configuration that indicates a BWP corresponding to thewireless control interface.

In some aspects, the configuration is carried by a control messagecomprising at least one of: DCI, an RRC message, or a MAC-CE.

In some aspects, the configuration is carried in an FH-PDCCH controlmessage.

In some aspects, the FH-PDCCH control message comprises downlink controlinformation scrambled by an FH-RNTI, the FH-RNTI is associated with thecontrol component.

In some aspects, the wireless control interface comprises an out-of-bandcontrol interface.

In some aspects, the control component is based at least in part on anLTE narrow band IoT UE.

In some aspects, the control component is based at least in part on anNR sub-6 reduced capability UE.

In some aspects, the control component is based on a UE specificationthat specifies a plurality of functions supported by the UE, and thecontrol component does not support all of the plurality of functions.

In some aspects, the configuration is carried in a control messagecomprising at least one of: a lower-layer control message, anupper-layer control message, or an application-layer control message.

In some aspects, the method includes transmitting, to the digitalrepeater, a control message that indicates at least one of: a receptionbeamforming configuration associated with the first signal, a receptiontime domain resource associated with the first signal, a transmissionbeamforming configuration associated with transmitting the secondsignal, or a transmission time domain resource associated withtransmitting the second signal.

In some aspects, the reception beamforming configuration indicates anindex associated with a beamforming codebook.

In some aspects, the reception beamforming configuration indicates atleast one of: a phase setting of an antenna element of the digitalrepeater, or an amplitude setting of the antenna element of the digitalrepeater.

In some aspects, the method includes receiving a control message fromthe digital repeater, wherein the control message indicates abeamforming capability of the digital repeater, and wherein thereception beamforming configuration is based at least in part on thebeamforming capability.

In some aspects, the transmission time domain resource is indicatedrelative to the reception time domain resource.

In some aspects, the transmission time domain resource is based at leastin part on a synchronization characteristic corresponding to asynchronization mode between the digital repeater and the control node.

In some aspects, the synchronization characteristic indicates asynchronous mode between the digital repeater and the control node, andthe transmission time domain resource is based at least in part on anindication of the reception time domain resource, wherein the indicationof the reception time domain resource indicates at least one of: asymbol identifier, a slot identifier, or a frame identifier.

In some aspects, the synchronization characteristic indicates anasynchronous mode between the digital repeater and the control node, andthe transmission time domain resource is based at least in part on anindication of a reference time domain resource, wherein the indicationof the reference time domain resource indicates at least one of: asymbol identifier, a slot identifier, or a frame identifier.

In some aspects, the method includes receiving, from the controlcomponent, an additional control message, wherein the reference timedomain resource corresponds to the additional control message.

In some aspects, the synchronization characteristic indicates anout-of-sync synchronization mode between the digital repeater and thecontrol node, and the transmission time domain resource is based atleast in part on a reference time domain resource, wherein the referencetime domain resource corresponds to the configuration.

In some aspects, the method includes receiving a control message fromthe digital repeater, wherein the control message includes one or moreIEs, the one or more IEs indicating at least one of: an operationsupported by the digital repeater, a beamforming codebookcharacteristic, a beamforming capability, a transmitter powerconfiguration, a timing configuration, a buffer status, an ADCconfiguration, an ADC setting, a DAC configuration, a DAC setting, an IQsample compression capability, an IQ sample decompression capability, anIQ sample compression setting, or an IQ sample decompression setting.

In some aspects, the beamforming codebook characteristic indicates atleast one of: a number of transmitter beams available, a number ofreceiver beams available, a spatial quasi co-location characteristicassociated with a beam, a number of antenna arrays, a number of antennapanels, an association between a beam and an antenna array, or anassociation between a beam and an antenna panel.

In some aspects, the transmitter power configuration indicates at leastone of: a power headroom, a maximum transmitter power, a maximum gainlevel, a current gain setting, or a current transmitter power.

In some aspects, the timing configuration indicates at least one of: alevel of synchronization between the digital repeater and the controlnode, a synchronous operation supported by the digital repeater, or anasynchronous operation supported by the digital repeater.

In some aspects, the buffer status indicates at least one of: anavailable memory, a maximum buffer size, or a buffer overflow.

In some aspects, the first signal comprises at least one of: a PDCCHtransmission, a PDSCH transmission, a PUCCH transmission, a PUSCHtransmission, or an ACK/NACK feedback message.

In some aspects, the digital processing operation comprises a digitalprocessing option selected from a plurality of digital processingoptions.

In some aspects, the digital processing option is based at least in parton at least one of: time domain IQ sample buffering, tone extraction,resource element extraction, channel estimation and equalization, ordecoding the first signal.

In some aspects, the configuration comprises at least one control IE,the at least one control IE indicating: a reception configuration, abuffering configuration, a forwarding configuration, or an informationrequest.

In some aspects, the reception configuration indicates at least one of:a reception analog beamforming configuration, a time domain resourceassociated with the first signal, a frequency domain resource associatedwith the first signal, a numerology associated with the first signal, adigital receiver beamforming configuration, RE mapping informationassociated with the first signal, a channel estimation configuration, ascrambling identifier associated with the first signal, or a codingconfiguration associated with the first signal.

In some aspects, the frequency domain resource associated with the firstsignal comprises at least one of: a center frequency, a bandwidth, or abandwidth part.

In some aspects, the numerology associated with the first signalcomprises at least one of: a CP size, an SCS, or an FFT size.

In some aspects, the RE mapping information associated with the firstsignal comprises a plurality of indices corresponding to a plurality ofoccupied tones associated with the first signal.

In some aspects, the channel estimation configuration indicates at leastone of: a resource associated with a reference signal, or aconfiguration associated with the reference signal.

In some aspects, the coding configuration indicates at least one of: amodulation and coding scheme, or a coding technique.

In some aspects, the buffering configuration indicates at least one of:an ADC setting, a DAC setting, an IQ sample compression setting, or anIQ sample decompression setting.

In some aspects, the ADC setting comprises at least one of: an ADCresolution, or a sample rate.

In some aspects, the forwarding configuration comprises at least one of:a transmission beamforming configuration, a time domain resourceassociated with transmitting the second signal, a transmission powersetting, a transmission amplification setting, a transmission centerfrequency, a numerology associated with transmitting the second signal,a digital transmitter beamforming configuration, RE mapping informationassociated with transmitting the second signal, a layer mappingconfiguration, a precoding configuration, a scrambling identifierassociated with transmitting the second signal, or a codingconfiguration associated with transmitting the second signal.

In some aspects, the numerology associated with forwarding the firstsignal comprises at least one of: a CP size, an SCS, or an FFT size.

In some aspects, the RE mapping information associated with forwardingthe first signal comprises a plurality of indices corresponding to aplurality of occupied tones associated with transmitting the secondsignal.

In some aspects, the information request comprises a request for atleast one of: a buffer status, a power status, a measurement report, acapability of the digital repeater, or a configuration of the digitalrepeater.

In some aspects, the request for the power status comprises a requestfor a power headroom of the digital repeater.

In some aspects, the request for the measurement report comprises arequest for a signal quality measurement.

In some aspects, the method includes receiving a periodic report fromthe digital repeater, wherein the periodic report indicates at least oneof: a capability of the digital repeater, or a configuration of thedigital repeater.

In some aspects, the method includes communicating with a wireless node,via the digital repeater, based at least in part on the configuration.

In some aspects, a digital repeater for wireless communication includesa memory and one or more processors coupled to the memory, the memoryand the one or more processors configured to: receive, using a controlcomponent of the digital repeater, a configuration that indicates adigital processing operation, wherein the control component receives theconfiguration from a control node via a wireless control interface;receive a first signal; perform, using a repeating component of thedigital repeater, the digital processing operation on the first signalto generate a second signal, wherein the second signal comprises are-generated version of the first signal; and transmit the secondsignal.

In some aspects, a control node for wireless communication includes amemory and one or more processors coupled to the memory, the memory andthe one or more processors configured to: determine a configuration fora repeating operation that facilitates forwarding a first signal fromthe control node to a wireless node, wherein the configuration indicatesa digital processing operation for regenerating the first signal tocreate a second signal, wherein the digital processing operationcomprises a digital processing option selected from a plurality ofdigital processing options; and transmit the configuration to a controlcomponent of a digital repeater via a wireless control interface.

In some aspects, a non-transitory computer-readable medium storing a setof instructions for wireless communication includes one or moreinstructions that, when executed by one or more processors of a digitalrepeater, cause the digital repeater to: receive, using a controlcomponent of the digital repeater, a configuration that indicates adigital processing operation, wherein the control component receives theconfiguration from a control node via a wireless control interface;receive a first signal; perform, using a repeating component of thedigital repeater, the digital processing operation on the first signalto generate a second signal, wherein the second signal comprises are-generated version of the first signal; and transmit the secondsignal.

In some aspects, a non-transitory computer-readable medium storing a setof instructions for wireless communication includes one or moreinstructions that, when executed by one or more processors of a controlnode, cause the control node to: determine a configuration for arepeating operation that facilitates forwarding a first signal from thecontrol node to a wireless node, wherein the configuration indicates adigital processing operation for regenerating the first signal to createa second signal, wherein the digital processing operation comprises adigital processing option selected from a plurality of digitalprocessing options; and transmit the configuration to a controlcomponent of a digital repeater via a wireless control interface.

In some aspects, an, apparatus for wireless communication includes:means for receiving, using a control component of the apparatus, aconfiguration that indicates a digital processing operation, wherein thecontrol component receives the configuration from a control node via awireless control interface; means for receiving a first signal; meansfor performing, using a repeating component of the apparatus, thedigital processing operation on the first signal to generate a secondsignal, wherein the second signal comprises a re-generated version ofthe first signal; and means for transmitting the second signal.

In some aspects, an apparatus for wireless communication includes: meansfor determining a configuration for a repeating operation thatfacilitates forwarding a first signal from the control node to awireless node, wherein the configuration indicates a digital processingoperation for regenerating the first signal to create a second signal,wherein the digital processing operation comprises a digital processingoption selected from a plurality of digital processing options; andmeans for transmitting the configuration to a control component of adigital repeater via a wireless control interface.

In some aspects, a method, device, apparatus, system, computer programproduct, non-transitory computer-readable medium, user equipment, basestation, node, wireless node, control node, digital repeater, wirelesscommunication device, and/or processing system as substantiallydescribed herein with reference to and as illustrated by the drawingsand specification.

The foregoing has outlined rather broadly the features and technicaladvantages of examples according to the disclosure in order that thedetailed description that follows may be better understood. Additionalfeatures and advantages will be described hereinafter. The conceptionand specific examples disclosed may be readily utilized as a basis formodifying or designing other structures for carrying out the samepurposes of the present disclosure. Such equivalent constructions do notdepart from the scope of the appended claims. Characteristics of theconcepts disclosed herein, both their organization and method ofoperation, together with associated advantages will be better understoodfrom the following description when considered in connection with theaccompanying figures. Each of the figures is provided for the purposesof illustration and description, and not as a definition of the limitsof the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can beunderstood in detail, a more particular description, briefly summarizedabove, may be had by reference to aspects, some of which are illustratedin the appended drawings. It is to be noted, however, that the appendeddrawings illustrate only certain typical aspects of this disclosure andare therefore not to be considered limiting of its scope, for thedescription may admit to other equally effective aspects. The samereference numbers in different drawings may identify the same or similarelements.

FIG. 1 is a diagram illustrating an example of a wireless network, inaccordance with the present disclosure.

FIG. 2 is a diagram illustrating an example of a base station incommunication with a UE in a wireless network, in accordance with thepresent disclosure.

FIG. 3 is a diagram illustrating an example of a repeater node thatforwards communications between a first wireless node and a secondwireless node, in accordance with the present disclosure.

FIGS. 4-8 are diagrams illustrating examples of forwarding a wirelesssignal using a digital repeater, in accordance with the presentdisclosure.

FIGS. 9 and 10 are diagrams illustrating example processes associatedwith forwarding a wireless signal using a digital repeater, inaccordance with the present disclosure.

FIGS. 11 and 12 are block diagrams of example apparatuses for wirelesscommunication, in accordance with the present disclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafterwith reference to the accompanying drawings. This disclosure may,however, be embodied in many different forms and should not be construedas limited to any specific structure or function presented throughoutthis disclosure. Rather, these aspects are provided so that thisdisclosure will be thorough and complete, and will fully convey thescope of the disclosure to those skilled in the art. Based on theteachings herein one skilled in the art should appreciate that the scopeof the disclosure is intended to cover any aspect of the disclosuredisclosed herein, whether implemented independently of or combined withany other aspect of the disclosure. For example, an apparatus may beimplemented or a method may be practiced using any number of the aspectsset forth herein. In addition, the scope of the disclosure is intendedto cover such an apparatus or method which is practiced using otherstructure, functionality, or structure and functionality in addition toor other than the various aspects of the disclosure set forth herein. Itshould be understood that any aspect of the disclosure disclosed hereinmay be embodied by one or more elements of a claim.

Several aspects of telecommunication systems will now be presented withreference to various apparatuses and techniques. These apparatuses andtechniques will be described in the following detailed description andillustrated in the accompanying drawings by various blocks, modules,components, circuits, steps, processes, algorithms, or the like(collectively referred to as “elements”). These elements may beimplemented using hardware, software, or combinations thereof. Whethersuch elements are implemented as hardware or software depends upon theparticular application and design constraints imposed on the overallsystem.

It should be noted that while aspects may be described herein usingterminology commonly associated with a 5G or NR radio access technology(RAT), aspects of the present disclosure can be applied to other RATs,such as a 3G RAT, a 4G RAT, and/or a RAT subsequent to 5G (e.g., 6G).

FIG. 1 is a diagram illustrating an example of a wireless network 100,in accordance with the present disclosure. The wireless network 100 maybe or may include elements of a 5G (NR) network and/or an LTE network,among other examples. The wireless network 100 may include a number ofbase stations 110 (shown as BS 110 a, BS 110 b, BS 110 c, and BS 110 d)and other network entities. A base station (BS) is an entity thatcommunicates with user equipment (UEs) and may also be referred to as anNR BS, a Node B, a gNB, a 5G node B (NB), an access point, a transmitreceive point (TRP), or the like. Each BS may provide communicationcoverage for a particular geographic area. In 3GPP, the term “cell” canrefer to a coverage area of a BS and/or a BS subsystem serving thiscoverage area, depending on the context in which the term is used.

A BS may provide communication coverage for a macro cell, a pico cell, afemto cell, and/or another type of cell. A macro cell may cover arelatively large geographic area (e.g., several kilometers in radius)and may allow unrestricted access by UEs with service subscription. Apico cell may cover a relatively small geographic area and may allowunrestricted access by UEs with service subscription. A femto cell maycover a relatively small geographic area (e.g., a home) and may allowrestricted access by UEs having association with the femto cell (e.g.,UEs in a closed subscriber group (CSG)). ABS for a macro cell may bereferred to as a macro BS. ABS for a pico cell may be referred to as apico BS. A BS for a femto cell may be referred to as a femto BS or ahome BS. In the example shown in FIG. 1, a BS 110 a may be a macro BSfor a macro cell 102 a, a BS 110 b may be a pico BS for a pico cell 102b, and a BS 110 c may be a femto BS for a femto cell 102 c. A BS maysupport one or multiple (e.g., three) cells. The terms “eNB”, “basestation”, “NR BS”, “gNB”, “TRP”, “AP”, “node B”, “5G NB”, and “cell” maybe used interchangeably herein.

In some aspects, a cell may not necessarily be stationary, and thegeographic area of the cell may move according to the location of amobile BS. In some aspects, the BSs may be interconnected to one anotherand/or to one or more other BSs or network nodes (not shown) in thewireless network 100 through various types of backhaul interfaces, suchas a direct physical connection or a virtual network, using any suitabletransport network.

Wireless network 100 may also include relay stations. A relay station isan entity that can receive a transmission of data from an upstreamstation (e.g., a BS or a UE) and send a transmission of the data to adownstream station (e.g., a UE or a BS). A relay station may also be aUE that can relay transmissions for other UEs. In the example shown inFIG. 1, a relay BS 110 d may communicate with macro BS 110 a and a UE120 d in order to facilitate communication between BS 110 a and UE 120d. A relay BS may also be referred to as a relay station, a relay basestation, a relay, or the like.

Wireless network 100 may be a heterogeneous network that includes BSs ofdifferent types, such as macro BSs, pico BSs, femto BSs, relay BSs, orthe like. These different types of BSs may have different transmit powerlevels, different coverage areas, and different impacts on interferencein wireless network 100. For example, macro BSs may have a high transmitpower level (e.g., 5 to 40 watts) whereas pico BSs, femto BSs, and relayBSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

A network controller 130 may couple to a set of BSs and may providecoordination and control for these BSs. Network controller 130 maycommunicate with the BSs via a backhaul. The BSs may also communicatewith one another, e.g., directly or indirectly via a wireless orwireline backhaul.

UEs 120 (e.g., 120 a, 120 b, 120 c) may be dispersed throughout wirelessnetwork 100, and each UE may be stationary or mobile. A UE may also bereferred to as an access terminal, a terminal, a mobile station, asubscriber unit, a station, or the like. A UE may be a cellular phone(e.g., a smart phone), a personal digital assistant (PDA), a wirelessmodem, a wireless communication device, a handheld device, a laptopcomputer, a cordless phone, a wireless local loop (WLL) station, atablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook,a medical device or equipment, biometric sensors/devices, wearabledevices (smart watches, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., smart ring, smart bracelet)), anentertainment device (e.g., a music or video device, or a satelliteradio), a vehicular component or sensor, smart meters/sensors,industrial manufacturing equipment, a global positioning system device,or any other suitable device that is configured to communicate via awireless or wired medium.

Some UEs may be considered machine-type communication (MTC) or evolvedor enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEsinclude, for example, robots, drones, remote devices, sensors, meters,monitors, and/or location tags, that may communicate with a basestation, another device (e.g., remote device), or some other entity. Awireless node may provide, for example, connectivity for or to a network(e.g., a wide area network such as Internet or a cellular network) via awired or wireless communication link. Some UEs may be consideredInternet-of-Things (IoT) devices, and/or may be implemented as NB-IoT(narrowband internet of things) devices. Some UEs may be considered aCustomer Premises Equipment (CPE). UE 120 may be included inside ahousing that houses components of UE 120, such as processor componentsand/or memory components. In some aspects, the processor components andthe memory components may be coupled together. For example, theprocessor components (e.g., one or more processors) and the memorycomponents (e.g., a memory) may be operatively coupled, communicativelycoupled, electronically coupled, and/or electrically coupled.

In general, any number of wireless networks may be deployed in a givengeographic area. Each wireless network may support a particular RAT andmay operate on one or more frequencies. A RAT may also be referred to asa radio technology, an air interface, or the like. A frequency may alsobe referred to as a carrier, a frequency channel, or the like. Eachfrequency may support a single RAT in a given geographic area in orderto avoid interference between wireless networks of different RATs. Insome cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120 a and UE 120e) may communicate directly using one or more sidelink channels (e.g.,without using a base station 110 as an intermediary to communicate withone another). For example, the UEs 120 may communicate usingpeer-to-peer (P2P) communications, device-to-device (D2D)communications, a vehicle-to-everything (V2X) protocol (e.g., which mayinclude a vehicle-to-vehicle (V2V) protocol or avehicle-to-infrastructure (V2I) protocol), and/or a mesh network. Inthis case, the UE 120 may perform scheduling operations, resourceselection operations, and/or other operations described elsewhere hereinas being performed by the base station 110.

Devices of wireless network 100 may communicate using theelectromagnetic spectrum, which may be subdivided based on frequency orwavelength into various classes, bands, channels, or the like. Forexample, devices of wireless network 100 may communicate using anoperating band having a first frequency range (FR1), which may span from410 MHz to 7.125 GHz, and/or may communicate using an operating bandhaving a second frequency range (FR2), which may span from 24.25 GHz to52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred toas mid-band frequencies. Although a portion of FR1 is greater than 6GHz, FR1 is often referred to as a “sub-6 GHz” band. Similarly, FR2 isoften referred to as a “millimeter wave” band despite being differentfrom the extremely high frequency (EHF) band (30 GHz-300 GHz) which isidentified by the International Telecommunications Union (ITU) as a“millimeter wave” band. Thus, unless specifically stated otherwise, itshould be understood that the term “sub-6 GHz” or the like, if usedherein, may broadly represent frequencies less than 6 GHz, frequencieswithin FR1, and/or mid-band frequencies (e.g., greater than 7.125 GHz).Similarly, unless specifically stated otherwise, it should be understoodthat the term “millimeter wave” or the like, if used herein, may broadlyrepresent frequencies within the EHF band, frequencies within FR2,and/or mid-band frequencies (e.g., less than 24.25 GHz). It iscontemplated that the frequencies included in FR1 and FR2 may bemodified, and techniques described herein are applicable to thosemodified frequency ranges.

As indicated above, FIG. 1 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 1.

FIG. 2 is a diagram illustrating an example 200 of a base station 110 incommunication with a UE 120 in a wireless network 100, in accordancewith the present disclosure. Base station 110 may be equipped with Tantennas 234 a through 234 t, and UE 120 may be equipped with R antennas252 a through 252 r, where in general T≥1 and R≥1.

At base station 110, a transmit processor 220 may receive data from adata source 212 for one or more UEs, select one or more modulation andcoding schemes (MCS) for each UE based at least in part on channelquality indicators (CQIs) received from the UE, process (e.g., encodeand modulate) the data for each UE based at least in part on the MCS(s)selected for the UE, and provide data symbols for all UEs. Transmitprocessor 220 may also process system information (e.g., for semi-staticresource partitioning information (SRPI)) and control information (e.g.,CQI requests, grants, and/or upper layer signaling) and provide overheadsymbols and control symbols. Transmit processor 220 may also generatereference symbols for reference signals (e.g., a cell-specific referencesignal (CRS) or a demodulation reference signal (DMRS)) andsynchronization signals (e.g., a primary synchronization signal (PSS) ora secondary synchronization signal (SSS)). A transmit (TX)multiple-input multiple-output (MIMO) processor 230 may perform spatialprocessing (e.g., precoding) on the data symbols, the control symbols,the overhead symbols, and/or the reference symbols, if applicable, andmay provide T output symbol streams to T modulators (MODs) 232 a through232 t. Each modulator 232 may process a respective output symbol stream(e.g., for OFDM) to obtain an output sample stream. Each modulator 232may further process (e.g., convert to analog, amplify, filter, andupconvert) the output sample stream to obtain a downlink signal. Tdownlink signals from modulators 232 a through 232 t may be transmittedvia T antennas 234 a through 234 t, respectively.

At UE 120, antennas 252 a through 252 r may receive the downlink signalsfrom base station 110 and/or other base stations and may providereceived signals to demodulators (DEMODs) 254 a through 254 r,respectively. Each demodulator 254 may condition (e.g., filter, amplify,downconvert, and digitize) a received signal to obtain input samples.Each demodulator 254 may further process the input samples (e.g., forOFDM) to obtain received symbols. A MIMO detector 256 may obtainreceived symbols from all R demodulators 254 a through 254 r, performMIMO detection on the received symbols if applicable, and providedetected symbols. A receive processor 258 may process (e.g., demodulateand decode) the detected symbols, provide decoded data for UE 120 to adata sink 260, and provide decoded control information and systeminformation to a controller/processor 280. The term“controller/processor” may refer to one or more controllers, one or moreprocessors, or a combination thereof. A channel processor may determinea reference signal received power (RSRP) parameter, a received signalstrength indicator (RSSI) parameter, a reference signal received quality(RSRQ) parameter, an/or a channel quality indicator (CQI) parameter,among other examples. In some aspects, one or more components of UE 120may be included in a housing 284.

Network controller 130 may include communication unit 294,controller/processor 290, and memory 292. Network controller 130 mayinclude, for example, one or more devices in a core network. Networkcontroller 130 may communicate with base station 110 via communicationunit 294.

Antennas (e.g., antennas 234 a through 234 t and/or antennas 252 athrough 252 r) may include, or may be included within, one or moreantenna panels, antenna groups, sets of antenna elements, and/or antennaarrays, among other examples. An antenna panel, an antenna group, a setof antenna elements, and/or an antenna array may include one or moreantenna elements. An antenna panel, an antenna group, a set of antennaelements, and/or an antenna array may include a set of coplanar antennaelements and/or a set of non-coplanar antenna elements. An antennapanel, an antenna group, a set of antenna elements, and/or an antennaarray may include antenna elements within a single housing and/orantenna elements within multiple housings. An antenna panel, an antennagroup, a set of antenna elements, and/or an antenna array may includeone or more antenna elements coupled to one or more transmission and/orreception components, such as one or more components of FIG. 2.

On the uplink, at UE 120, a transmit processor 264 may receive andprocess data from a data source 262 and control information (e.g., forreports that include RSRP, RSSI, RSRQ, and/or CQI) fromcontroller/processor 280. Transmit processor 264 may also generatereference symbols for one or more reference signals. The symbols fromtransmit processor 264 may be precoded by a TX MIMO processor 266 ifapplicable, further processed by modulators 254 a through 254 r (e.g.,for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In someaspects, a modulator and a demodulator (e.g., MOD/DEMOD 254) of the UE120 may be included in a modem of the UE 120. In some aspects, the UE120 includes a transceiver. The transceiver may include any combinationof antenna(s) 252, modulators and/or demodulators 254, MIMO detector256, receive processor 258, transmit processor 264, and/or TX MIMOprocessor 266. The transceiver may be used by a processor (e.g.,controller/processor 280) and memory 282 to perform aspects of any ofthe methods described herein.

At base station 110, the uplink signals from UE 120 and other UEs may bereceived by antennas 234, processed by demodulators 232, detected by aMIMO detector 236 if applicable, and further processed by a receiveprocessor 238 to obtain decoded data and control information sent by UE120. Receive processor 238 may provide the decoded data to a data sink239 and the decoded control information to controller/processor 240.Base station 110 may include communication unit 244 and communicate tonetwork controller 130 via communication unit 244. Base station 110 mayinclude a scheduler 246 to schedule UEs 120 for downlink and/or uplinkcommunications. In some aspects, a modulator and a demodulator (e.g.,MOD/DEMOD 232) of the base station 110 may be included in a modem of thebase station 110. In some aspects, the base station 110 includes atransceiver. The transceiver may include any combination of antenna(s)234, modulators and/or demodulators 232, MIMO detector 236, receiveprocessor 238, transmit processor 220, and/or TX MIMO processor 230. Thetransceiver may be used by a processor (e.g., controller/processor 240)and memory 242 to perform aspects of any of the methods describedherein.

Controller/processor 240 of base station 110, controller/processor 280of UE 120, and/or any other component(s) of FIG. 2 may perform one ormore techniques associated with forwarding a wireless signal using adigital repeater, as described in more detail elsewhere herein. Forexample, controller/processor 240 of base station 110,controller/processor 280 of UE 120, and/or any other component(s) ofFIG. 2 may perform or direct operations of, for example, process 900 ofFIG. 9, process 1000 of FIG. 10, and/or other processes as describedherein. Memories 242 and 282 may store data and program codes for basestation 110 and UE 120, respectively. In some aspects, memory 242 and/ormemory 282 may include a non-transitory computer-readable medium storingone or more instructions (e.g., code and/or program code) for wirelesscommunication. For example, the one or more instructions, when executed(e.g., directly, or after compiling, converting, and/or interpreting) byone or more processors of the base station 110 and/or the UE 120, maycause the one or more processors, the UE 120, and/or the base station110 to perform or direct operations of, for example, process 900 of FIG.9, process 1000 of FIG. 10, and/or other processes as described herein.In some aspects, executing instructions may include running theinstructions, converting the instructions, compiling the instructions,and/or interpreting the instructions.

In some aspects, a digital repeater (e.g., a base station 110, a UE 120,a reduced capacity UE, a repeating node, and/or the like) may includemeans for receiving, using a control component of the digital repeater,a configuration that indicates a digital processing operation, whereinthe control component receives the configuration from a control node viaa wireless control interface, means for receiving a first signal, meansfor performing, using a repeating component of the digital repeater, thedigital processing operation on the first signal to generate a secondsignal, wherein the second signal comprises a re-generated version ofthe first signal, means for transmitting the second signal, and/or thelike. In some aspects, such means may include one or more components ofbase station 110 and/or UE 120 described in connection with FIG. 2, suchas controller/processor 240 or 280, transmit processor 220 or 264, TXMIMO processor 230 or 266, MOD 232 or 254, antenna 234 or 252, DEMOD 232or 254, MIMO detector 236 or 256, receive processor 238 or 258, and/orthe like.

In some aspects, a control node (e.g., a base station 110, an integratedaccess and backhaul (IAB) donor, an IAB node, a UE 120, and/or the like)may include means for transmitting, to an MT function of a digitalrepeater via a wireless control interface, a configuration thatindicates a digital processing operation, means for communicating withthe digital repeater based at least in part on the configuration, and/orthe like. In some aspects, such means may include one or more componentsof base station 110 and/or UE 120 described in connection with FIG. 2,such as controller/processor 240 or 280, transmit processor 220 or 264,TX MIMO processor 230 or 266, MOD 232 or 254, antenna 234 or 252, DEMOD232 or 254, MIMO detector 236 or 256, receive processor 238 or 258,and/or the like.

As indicated above, FIG. 2 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 2.

FIG. 3 is a diagram illustrating an example 300 of a repeater node thatforwards communications between a first wireless node and a secondwireless node, in accordance with the present disclosure. As shown,example 300 includes a first wireless node 305 (e.g., an integratedaccess and backhaul (IAB) node, an IAB donor, a base station 110, and UE120, and/or the like), a repeater node 310 (e.g., a repeater device, abase station 110, a UE 120, a millimeter wave repeater, a digitalrepeater, an analog repeater, and/or the like), and a second wirelessnode 315 (e.g., an IAB node, an IAB donor, a base station 110, and UE120, another repeater node 310, and/or the like). In example 300, thefirst wireless node 305 and/or the second wireless node 315 may be awareof the repeater node 310. In some aspects, the first wireless node 305and/or the second wireless node 315 may be unaware of the repeater node310.

As shown in FIG. 3, the first wireless node 305 may want to transmit acommunication 320 (e.g., a data communication, a control communication,and/or the like) to the second wireless node 315 using a direct link 325(e.g., an access link and/or the like) between the first wireless node305 and the second wireless node 315. However, the first wireless node305 may be unable to transmit the communication 320 to the secondwireless node 315 using the direct link 325. For example, the secondwireless node 315 may be outside of a transmit range of the firstwireless node 305, the direct link 325 may be blocked, and/or the like.Therefore, the first wireless node 305 may communicate with the secondwireless node 315 using an indirect link 330.

For example, the first wireless node 305 may transmit the communication320 (e.g., as a wireless signal) to the repeater node 310. In someaspects, the first wireless node 305 may transmit the communication 320directly to the repeater node 310 (e.g., when the first wireless node305 is aware of the repeater node 310). In some aspects, the repeaternode 310 may be configured (e.g., by a control node, by the secondwireless node 315, and/or the like) to receive the communication 320from the first wireless node 305 (e.g., when the first wireless node 305is unaware of the repeater node 310).

As shown in FIG. 3, the communication 320 may pass through the repeaternode 310 and be forwarded by the repeater node 310. For example, therepeater node 310 may receive the wireless signal carrying thecommunication 320 and may re-generate the wireless signal based at leastin part on the communication 320, the wireless signal, an analogprocessing operation, a digital processing operation, and/or the like.The repeater node 310 may transmit the re-generated version of thewireless signal.

In some cases, an indirect link 330 may be an access link, a side link,or a fronthaul link. For example, if the first wireless node 305 is abase station 110 and the second wireless node 315 is a UE 120, theindirect link 330 between the first wireless node 305 and the repeaternode 310 may be a fronthaul link. The indirect link 330 between therepeater node 310 and the second wireless node 315 may be an accesslink. Using the communication scheme shown in FIG. 3 may improve networkperformance and increase reliability by providing the first wirelessnode 305 and/or the second wireless node 315 with link diversity forcommunications, by extending a communication coverage area of the firstwireless node 305 and/or the second wireless node 315, and/or the like.

In a typical scenario, an analog repeater node may be deployed. Theanalog repeater node may facilitate an indirect link by forwarding acommunication from a first wireless node to a second wireless node.However, an analog repeater node does not store a signal (e.g., acommunication). Rather, an analog repeater node simply receives thesignal and re-transmits the signal without performing any digitalprocessing on the signal. As a result, an analog repeater node may notprovide control over the timing of a re-transmission of a signal, mayproduce self-interference, and may become unstable. To address theseconcerns, some repeater nodes may facilitate digitizing a signal andstoring the digitized signal so that some control over timing may beprovided. In a typical scenario, this digital repeater may be wired(e.g., via ethernet), restricted to repeating communications on acertain protocol layer, and/or the like. As a result, typical analog anddigital repeaters may not provide a flexible solution that can becontrolled to adapt to various scenarios, channel conditions, and/or thelike.

Aspects of techniques and apparatuses described herein provide a digitalrepeater that may be at least partially controlled by a control node tofacilitate forwarding a wireless signal. Some aspects include techniquesfor facilitating a control interface between a digital repeater and acontrol node. In some aspects, a control node may transmit, via acontrol interface, a configuration to the digital repeater. Theconfiguration may indicate a digital processing operation that mayinclude a digital processing option selected from a plurality of digitalprocessing options. The digital repeater may receive a first signal,process the first signal based at least in part on the configureddigital processing option, and may transmit a second signal that is are-generated version of the first signal.

In this way, aspects facilitate providing a digital repeater that may beadapted by a control node to perform a number of different types ofdigital processing operations. As a result, aspects of techniques andapparatuses described herein may facilitate providing indirectcommunication links that are more adaptable to channel qualitydifferences, timing issues, traffic conditions, and/or the like, therebyproviding more reliable indirect communication links.

As indicated above, FIG. 3 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 3.

FIG. 4 is a diagram illustrating an example 400 associated withforwarding a wireless signal using a digital repeater, in accordancewith the present disclosure. As shown, the example 400 includes adigital repeater 405 that may communicate with a control node 410, awireless node 415, and a wireless node 420. In some aspects, the digitalrepeater 405 may include the repeater node 310 shown in FIG. 3. In someaspects, the control node 410, the wireless node 415, and/or thewireless node 420 may be a wireless node such as, for example, the firstwireless node 305 shown in FIG. 3, the second wireless node 315 shown inFIG. 3, an IAB node, an IAB donor, a base station 110 shown in FIG. 1, aUE 120 shown in FIG. 1, and/or the like.

In some aspects, the digital repeater 405 may include a millimeter waverepeater that is configured to receive a millimeter wave signal and totransmit a re-generated version of the millimeter wave signal. As shownin FIG. 4, the digital repeater 405 may include a control component 425and a repeating component 430. In some aspects, the control component425 may facilitate establishing a wireless control interface 435 betweenthe digital repeater 405 and the control node 410. In some aspects, thecontrol component 425 may include one or more components and/orfunctions that are, or are similar to, one or more components of a basestation (e.g., the base station 110 shown in FIGS. 1 and 2), a UE (e.g.,the UE 120 shown in FIGS. 1 and 2), and/or the like. In some aspects,for example, the control component 425 may be based at least in part onan LTE narrow band Internet-of-Things (IoT) UE, an NR sub-6 reducedcapability UE, and/or the like. In some aspects, the control component425 may be based on a UE specification that specifies a plurality offunctions supported by a UE, but where the control component 425 doesnot support all of the plurality of functions.

In some aspects, the repeating component 430 may perform one or morerepeating operations. A repeating operation may be a process thatincludes receiving a first signal 440, performing one or more digitalprocessing operations on the first signal 440 to generate a secondsignal 445, and transmitting the second signal 445. In some aspects, thefirst signal 440 may include a communication (e.g., the communication320 shown in FIG. 3) that is transmitted from the control node 410 andaddressed to the wireless node 415. In some aspects, as shown, the firstsignal 440 may be transmitted from the control node 410 and addressed tothe wireless node 420. In some aspects, as shown, the first signal 440may be transmitted from the wireless node 415 or 420 and addressed tothe control node 410. In some aspects, the first signal 440 may betransmitted from the wireless node 415 or 420 and addressed to thecontrol node 410, the other wireless node 415 or 420, and/or the like.In some aspects, the first signal 440 may be addressed to a plurality ofwireless nodes (e.g., wireless nodes 415 and 420, control node 410,and/or the like). In some aspects, the first signal 440 may include aphysical downlink control channel (PDCCH) transmission, a physicaldownlink shared channel (PDSCH) transmission, a physical uplink controlchannel (PUCCH) transmission, a physical uplink shared channel (PUSCH)transmission, a physical random access channel (PRACH) communication, aphysical sidelink channel communication, a reference signal (RS)communication, an acknowledgement or negative acknowledgement (ACK/NACK)feedback message, and/or the like.

In some aspects, the repeating component 430 may perform the one or morerepeating operations based at least in part on a configurationestablished using the control component 425. For example, in someaspects, the control node 410 may transmit a configuration 450 using acontrol message 455, and the digital repeater 405 may receive thecontrol message 455 using the control component 425.

The control node 410 may transmit the configuration 450 in the controlmessage 455 via the control interface 435. The configuration 450 may becarried in at least one control message 455. In some aspects, controlmessages 455 may be specified for communication between the digitalrepeater 405 and the control node 410 in accordance with a specificationof the control interface 435. In some aspects, the configuration 450 maybe carried in a lower-layer control message (e.g., a control messageassociated with physical layers and/or medium access control (MAC)layers), an upper-layer control message (e.g., a control messageassociated with network layers), an application-layer control message(e.g., a control message associated with an application layer), and/orthe like. For example, a control message 455 may be carried using aradio resource control (RRC) message, downlink control information(DCI), a MAC control element (MAC-CE), and/or the like.

In some aspects, the control interface 435 may be an in-band controlinterface. For example, in some aspects, the first signal 440 may betransmitted by the control node 410 (and/or the wireless node 415, thewireless node 420, and/or the like) and received by the digital repeater405 using the same frequency that is used for transmitting and receivingcontrol messages 455. In some aspects, a control message 455 may beincluded within the first signal 440. In some aspects, the configuration450 may be included within the first signal 440. In some aspects, theconfiguration 450 may be carried in a front haul physical downlinkcontrol channel (FH-PDCCH) control message (which may be the controlmessage 455). In some aspects, the FH-PDCCH control message may includeDCI scrambled by a front haul radio network temporary identifier(FH-RNTI). The FH-RNTI may be associated with the control component. Insome aspects, as indicated above, the configuration 450 may be carriedin a MAC-CE of a physical downlink shared channel (PDSCH) transmissionthat is received using the repeating component 430, which may extractthe configuration 450 (and/or other control messages, configurationinformation, and/or the like) and provide the extracted configuration450 (and/or other control messages, configuration information, and/orthe like) to the control component 425.

In some aspects, the control interface 435 may be an out-of-band controlinterface. For example, in some aspects, the repeating component 430 mayreceive and/or transmit signals using a first frequency (or range offrequencies), and the control component 425 may receive and/or transmitcontrol messages using a second frequency (or range of frequencies). Insome aspects, the second frequency may be lower than the firstfrequency. That is, for example, in some aspects, the repeatingcomponent 430 may communicate using millimeter waves, while the controlcomponent 425 may communicate using frequencies that are lower thanmillimeter wave frequencies. For example, in some aspects, the controlcomponent 425 may communicate using sub-6 (sub-6 GHz) frequencies. Insome aspects, the control node 410 may transmit, and the digitalrepeater 405 may receive, a configuration of the control interface 435or one or more aspects thereof. In some aspects, for example, thecontrol node 410 may transmit a configuration of a frequency, abandwidth, a bandwidth part (BWP), and/or the like. In some aspects, therepeating component 430 may communicate using a first RAT (e.g., NR) andthe control component 425 may communicate using a second RAT (e.g.,Bluetooth, WiFi, and/or the like). In some aspects, the controlinterface 435 may include an access link between the control component425 and the control node 410.

In some aspects, the configuration 450 may configure any number ofdifferent types of settings, configurations, digital processingoperations, reception operations, buffering operations, forwarding(transmission) operations, and/or the like. In some aspects, the digitalrepeater 405 may transmit, and the control node 410 may receive, one ormore control messages. For example, in some aspects, the digitalrepeater 405 may, using the control component 425, transmit a controlmessage via the control interface 435 to the control node. The controlmessage transmitted by the digital repeater 405 may indicate aconfiguration of the digital repeater 405, a capability of the digitalrepeater 405, a status of the digital repeater 405, and/or the like.

As indicated above, in some aspects, the control node 410 may configurethe digital repeater 405 for a particular repeating operation bytransmitting a configuration 450 to the digital repeater. In someaspects, the configuration 450 may indicate a digital processingoperation. The digital processing operation may include a digitalprocessing option selected from a plurality of digital processingoptions (e.g., the digital processing options 525-550 shown in, anddescribed below in connection with, FIG. 5).

In some aspects, the configuration 450 may include one or moreinformation elements (IEs) that indicate a reception configuration, abuffering configuration, a forwarding configuration, an informationrequest, and/or the like.

In some aspects, the reception configuration may be used to configureaspects of a reception operation of the repeating component 430 withrespect to receiving the first signal 440. The reception configurationmay indicate, for example, a reception analog beamforming configuration,a time domain resource associated with the first signal 440, a frequencydomain resource associated with the first signal 440, a numerologyassociated with the first signal 440, a digital receiver beamformingconfiguration, resource element (RE) mapping information associated withthe first signal 440, a channel estimation configuration, a scramblingidentifier associated with the first signal 440, a coding configurationassociated with the first signal 440, and/or the like.

In some aspects, the buffering configuration may be used to configureaspects of a buffering operation of the repeating component 430 withrespect to buffering a digitized form of the first signal 440. In someaspects, the buffering configuration may indicate an analog-to-digitalconverter (ADC) setting, a digital-to-analog converter (DAC) setting, anin-phase and quadrature (IQ) sample compression setting, an IQ sampledecompression setting, and/or the like.

In some aspects, the forwarding configuration may be used to configureaspects of a forwarding operation of the repeating component 430 withrespect to transmitting the second signal 445, which may be are-generated form of the first signal 440. In some aspects, theforwarding configuration may include a transmission beamformingconfiguration, a time domain resource associated with transmitting thesecond signal 445, a transmission power setting, a transmissionamplification setting, a transmission center frequency, a numerologyassociated with transmitting the second signal 445, a digitaltransmitter beamforming configuration, RE mapping information associatedwith transmitting the second signal 445, a layer mapping configuration,a precoding configuration, a scrambling identifier associated withtransmitting the second signal 445, a coding configuration associatedwith transmitting the second signal 445, and/or the like.

In some aspects, the information request may be used to configureaspects of a reporting operation of the repeating component 430 withrespect to providing information to the control node 410. Theinformation may include information about the operation of the digitalrepeater 405, information about the configuration of the digitalrepeater 405, information about settings of the digital repeater 405,information about a channel, information about a communication, and/orthe like. In some aspects, the information request may include a requestfor a buffer status, a power status, a measurement report, a capabilityof the digital repeater 405, a configuration of the digital repeater405, and/or the like.

As indicated above, FIG. 4 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 4.

FIG. 5 is a diagram illustrating an example 500 of forwarding a wirelesssignal using a digital repeater, in accordance with the presentdisclosure. As shown, the example 500 includes a digital repeater 505that may communicate with a control node 510 and a wireless node 515. Insome aspects, the digital repeater 505 may communicate with one or moreadditional wireless nodes (not shown).

In some aspects, the digital repeater 505 may include the digitalrepeater 405 shown in FIG. 4, the repeater node 310 shown in FIG. 3,and/or the like. In some aspects, the control node 510 may include thecontrol node 410 shown in FIG. 4, the first wireless node 305 shown inFIG. 3, the second wireless node 315 shown in FIG. 3, an IAB node, anIAB donor, a base station 110 shown in FIG. 1, a UE 120 shown in FIG. 1,and/or the like. In some aspects, the wireless node 515 may include thewireless node 415 shown in FIG. 4, the wireless node 420 shown in FIG.4, the first wireless node 305 shown in FIG. 3, the second wireless node315 shown in FIG. 3, an IAB node, an IAB donor, a base station 110 shownin FIG. 1, a UE 120 shown in FIG. 1, and/or the like.

As shown by reference number 520, the control node 510 may transmit, andthe digital repeater 505 may receive, a configuration. In some aspects,the configuration may be, be similar to, include, or be included in theconfiguration 450 shown in FIG. 4. In some aspects, the configurationmay be received using a control component (e.g., the control component425 shown in FIG. 4) of the digital repeater 505 via a control interface(e.g., the control interface 435 shown in FIG. 4). The configuration mayindicate a digital processing operation. A digital processing operationmay be a repeating operation that at least includes obtaining aplurality of digital samples from a first signal and storing theplurality of digital samples.

A repeating operation may include a repeater receiving a first signalfrom a first wireless node, processing the signal to generate a secondsignal, and transmitting the second signal to a second wireless node. Insome aspects, processing the first signal may include re-generating thefirst signal (by generating a re-generated version of the first signal,which may be referred to herein, interchangeably, as a “re-generatedsignal”) based at least in part on the processing of the first signal.In this way, the repeater node may repeat the signal received from thefirst wireless node to the second wireless node. Transmitting there-generated signal may be referred to as forwarding the re-generatedsignal and/or performing a forwarding operation.

As shown in FIG. 5, the processing operation indicated by theconfiguration may include a processing option selected from a pluralityof processing options. The plurality of processing options may include afirst processing option 525 (shown as processing blocks and associatedintermediate output, “analog signal,” to the right of the first dottedvertical line from the right) that may be based at least in part on ananalog processing of the received signal. The plurality of processingoptions may include a second processing option 530 (shown as processingblocks and associated intermediate outputs, “analog signal” and “TD IQsamples,” to the right of the second dotted vertical line from theright) that may be based at least in part on determining and bufferingtime domain (TD) in-phase and quadrature (IQ) samples.

The plurality of processing options may include a third processingoption 535 (shown as processing blocks and associated intermediateoutputs, “analog signal,” “TD IQ samples,” and “FD IQ samples,” to theright of the third dotted vertical line from the right) that may bebased at least in part on tone extraction. The tone extraction mayinclude determining frequency domain (FD) IQ samples. The plurality ofprocessing options may include a fourth processing option 540 (shown asprocessing blocks and associated intermediate outputs, “analog signal,”“TD IQ samples,” “FD IQ samples,” and “symbols/antenna,” to the right ofthe fourth dotted vertical line from the right) that may be based atleast in part on resource element (RE) extraction. Extraction of REs mayinclude determining symbols and antenna elements, antennaconfigurations, and/or the like.

The plurality of processing options may include a fifth processingoption 545 (shown as processing blocks and associated intermediateoutputs, “analog signal,” “TD IQ samples,” “FD IQ samples,”“symbols/antenna,” and “codeword,” to the right of the fifth dottedvertical line from the right) that may be based at least in part onchannel estimation and equalization. Equalization of channels associatedwith extracted REs may be used to determine codewords. The plurality ofprocessing options may include a sixth processing option 550 (shown asprocessing blocks and associated intermediate outputs, “analog signal,”“TD IQ samples,” “FD IQ samples,” “symbols/antenna,” “codeword,” and“transport block,” to the right of the sixth dotted vertical line fromthe right) that may be based at least in part on decoding the receivedsignal to determine a transport block.

According to various aspects, the second, third, fourth, fifth, andsixth processing options 530-550 may be referred to as digitalprocessing options since they include processing of digital information.A repeater node that is capable of, and/or configured to, perform onlythe first processing option may be referred to as an analog repeater. Arepeater node that is capable of, and/or configured to, perform any oneor more of the second, third, fourth, fifth, or sixth processing options530-550 may be referred to as a digital repeater (e.g., the digitalrepeater 505). Thus, the configuration may indicate a digital processingoption selected from the second, third, fourth, fifth, and sixthprocessing options 530-550. In some aspects, the configuration mayinclude information that may be used by the digital repeater 505 tofacilitate performing the processing option, as discussed below inconnection with the various processing options.

As shown by reference number 555, the control node 510 may transmit, andthe digital repeater 505 may receive, a first signal. In some aspects,the first signal may be, be similar to, include, or be included in, thefirst signal 440 shown in FIG. 4. The first signal may be transmitted bythe control node 510, the wireless node 515, or another wireless nodenot shown in FIG. 5. As shown by reference number 560, the digitalrepeater 505 may perform a digital processing operation on the firstsignal to generate a second signal.

In some aspects, the digital repeater 505 may perform the digitalprocessing operation indicated by the configuration. In addition to, orin lieu of, performing a digital procession operation, the digitalrepeater also may be configured to perform an analog processingoperation, indicated as the first processing option 525. In the firstprocessing option 525, the digital repeater 505 may receive the firstsignal and may perform an analog beamforming procedure to obtain asecond analog signal associated with the first signal. The digitalrepeater 505 may extract the analog signal and may re-generate theanalog signal in a transmit (Tx) chain of the digital repeater 505. Forexample, the digital repeater 505 may perform an analog beamformingprocedure on the analog signal to form the outgoing signal (e.g., thedigital repeater 505 may boost the analog signal, apply an analogbeamforming gain, and/or the like).

According to some aspects, to support the first processing option 525,the digital repeater 505 may receive, from the control node 510, one ormore control messages (e.g., in the configuration shown by referencenumber 520) that indicate a reception beamforming configurationassociated with the first signal, a transmission beamformingconfiguration associated with transmitting the second signal, and/or thelike. In some aspects, the reception beamforming configuration mayindicate an index associated with a beamforming codebook. In someaspects, the digital repeater 505 may transmit a control message to thecontrol node 510 that indicates a beamforming codebook characteristic.The beamforming codebook characteristic may indicate, for example, anumber of transmitter beams available, a number of receiver beamsavailable, a spatial quasi co-location characteristic associated with abeam, a number of antenna arrays, a number of antenna panels, anassociation between a beam and an antenna array, an association betweena beam and an antenna panel, and/or the like.

In some aspects, the reception beamforming configuration may indicate aphase setting of an antenna element of the digital repeater 505, anamplitude setting of the antenna element of the digital repeater 505,and/or the like. In some aspects, the digital repeater 505 may transmita control message to the control node 510 that indicates a beamformingcapability of the digital repeater, and the reception beamformingconfiguration may be based at least in part on the beamformingcapability.

In some aspects, the digital repeater 505 may transmit a control messageto the control node 510 that indicates a transmitter powerconfiguration, and the configuration received from the control node 510may indicate one or more transmitter power and/or amplification settingsbased at least in part on the transmitter power configuration. In someaspects, the transmitter power configuration may indicate a powerheadroom, a maximum transmitter power, a maximum gain level, a currentgain setting, a current transmitter power, and/or the like.

In the second processing option 530, in some aspects, the digitalrepeater 505 may perform digital signal processing (which also includesthe first processing option). As shown, after receiving the incomingsignal and performing an analog beamforming procedure associated withthe incoming signal, the digital repeater 505 may convert the incomingsignal from the analog domain to the digital domain using ananalog-to-digital converter (ADC). After converting the incoming signalfrom the analog domain to the digital domain, the digital repeater 505may determine one or more time domain in-phase and quadrature (IQ)samples (shown as “TD IQ samples”) associated with the incoming signal.The digital repeater 505 may extract the time domain IQ samples and maystore the time domain IQ samples in a buffer of the repeater node. Thedigital repeater 505 may use the time domain IQ samples to re-generatethe incoming signal in the Tx chain of the digital repeater 505 (e.g.,immediately after extracting the time domain IQ samples or at a latertime). For example, the digital repeater 505 may convert the time domainIQ samples from the digital domain to the analog domain using adigital-to-analog converter (DAC). The digital repeater 505 may performan analog beamforming procedure on the analog signal to form the secondsignal, in accordance with the first processing option 525, beforetransmitting the second signal to the wireless node 515.

In some aspects, to facilitate performance of the second processingoption by the digital repeater 505, the configuration may indicate areception configuration, a buffering configuration, a forwardingconfiguration, an information request, and/or the like. In some aspects,for example, the configuration may indicate a timing configuration. Thetiming configuration may include aspects of the reception configuration,the buffering configuration, the forwarding configuration, and/or thelike.

In some aspects, for example, the reception configuration may indicate areception analog beamforming configuration, a time domain resourceassociated with the first signal, a frequency domain resource associatedwith the first signal, and/or the like. In some aspects, the frequencydomain resource associated with the first signal may include a centerfrequency, a bandwidth, a BWP, and/or the like.

In some aspects, the buffering configuration may indicate an ADC setting(e.g., an ADC resolution, sample rate, and/or the like), a DAC setting,an IQ sample compression setting, an IQ sample decompression setting, abuffer status (e.g., an available memory, a maximum buffer size, abuffer overflow, and/or the like), an ADC configuration, a DACconfiguration, an IQ capability, an IQ setting, and/or the like.

In some aspects, the forwarding configuration may indicate atransmission beamforming configuration, a time domain resourceassociated with transmitting the second signal, a transmission powersetting, a transmission amplification setting, a transmission centerfrequency, and/or the like. In some aspects, the transmission timedomain resource may be indicated relative to the reception time domainresource. The transmission time domain resource may be based at least inpart on a synchronization characteristic corresponding to asynchronization mode between the digital repeater and the control node.For example, the synchronization characteristic may indicate asynchronous mode between the digital repeater and the control node, andthe transmission time domain resource may be based at least in part onan indication (e.g., a symbol identifier, a slot identifier, a frameidentifier, and/or the like) of the reception time domain resource.

In some aspects, the synchronization characteristic may indicate anasynchronous mode between the digital repeater and the control node, andthe transmission time domain resource may be based at least in part onan indication (e.g., a symbol identifier, a slot identifier, a frameidentifier, and/or the like) of a reference time domain resource. Insome aspects, the digital repeater may transmit, using the controlcomponent, an additional control message to the control node, and thereference time domain resource may correspond to the additional controlmessage In some aspects, the synchronization characteristic may indicatean out-of-sync synchronization mode between the digital repeater and thecontrol node, and the transmission time domain resource may be based atleast in part on a reference time domain resource that corresponds tothe configuration (e.g., a time associated with transmission or receiptof a control message containing at least a portion of theconfiguration).

In some aspects, the information request may include a request for abuffer status, a power status, a measurement report, a capability of thedigital repeater, a configuration of the digital repeater, and/or thelike. In some aspects, the request for the power status may include, forexample, a request for a power headroom of the digital repeater 505. Insome aspects, the request for the measurement report may include arequest for a signal quality measurement. In some aspects, the digitalrepeater 505 may transmit a periodic report to the control node 510 thatindicates a capability of the digital repeater 505, a configuration ofthe digital repeater 505, signal quality measurements, and/or the like.

In the third processing option 535, in some aspects, the digitalrepeater 505 may perform further digital processing (which also mayinclude the second processing option and the first processing option).As shown, for example, after converting the incoming signal from theanalog domain to the digital domain, the digital repeater 505 may removea cyclic prefix (CP) associated with the incoming signal and may performa fast-Fourier transform (FFT) on the incoming signal. Based at least inpart on removing the CP and performing the FFT, the digital repeater 505may determine one or more frequency domain IQ samples (shown as “FD IQsamples”) associated with the incoming signal. Frequency domain IQsamples may correspond to tones (e.g., OFDM tones). The digital repeater505 may extract the frequency domain IQ samples and may store thefrequency domain IQ samples in a buffer of the digital repeater 505. Thedigital repeater 505 may use the frequency domain IQ samples tore-generate the incoming signal in the Tx chain of the digital repeater505 (e.g., immediately after extracting the frequency domain IQ samplesor at a later time). For example, the digital repeater 505 may performan inverse FFT (iFFT) operation on the frequency domain IQ samples togenerate re-generated time domain IQ samples. The digital repeater 505may add a CP to the re-generated time domain IQ samples. The digitalrepeater 505 may convert the digital signal (e.g., the re-generateddigital samples) from the digital domain to the analog domain using theDAC. The digital repeater 505 may perform an analog beamformingprocedure on the analog signal to form the second signal.

In some aspects, to facilitate performance of the third processingoption 535 by the digital repeater 505, the configuration may indicatefurther IEs associated with the reception configuration and/or thetransmission configuration. These further IEs may be in addition to IEsdescribed above in connection with the second processing option 530, thefirst processing option 525, and/or the like.

In some aspects, for example, the reception configuration may indicate anumerology associated with the first signal and the forwardingconfiguration may indicate a numerology associated with transmitting thesecond signal. In some aspects, the numerology associated with the firstsignal may be the same as the numerology associated with transmittingthe second signal. In some aspects, the numerology associated with thefirst signal may be different than the numerology associated withtransmitting the second signal. In some aspects, the numerologyassociated with the first signal and/or the numerology associated withtransmitting the second signal may include at least one of a cyclicprefix size, a subcarrier spacing, a fast Fourier transform size, and/orthe like.

In the fourth processing option 540, in some aspects, the digitalrepeater 505 may perform further digital processing (which also mayinclude the third processing option, the second processing option, andthe first processing option). In some aspects, in the fourth processingoption 540, after removing the CP and performing the FFT associated withthe incoming signal, the digital repeater 505 may perform a digitalbeamforming procedure associated with the incoming signal. The digitalrepeater 505 may perform an RE de-mapping operation associated with theincoming signal to extract REs based at least in part on the determinedtones. After performing the digital beamforming procedure and the REde-mapping procedure, the digital repeater 505 may determine one or moreIQ samples of occupied tones (e.g., a quantity of symbols per antennaelement) associated with the incoming signal. The digital repeater 505may extract the IQ samples of occupied tones and may store the IQsamples of occupied tones in a buffer of the digital repeater 505. Thedigital repeater 505 may use the IQ samples of occupied tones tore-generate the incoming signal in the Tx chain of the digital repeater505 (e.g., immediately after extracting the IQ samples of occupied tonesor at a later time). For example, the digital repeater 505 may performan RE mapping procedure (e.g., the inverse of the RE de-mappingprocedure) associated with the IQ samples of occupied tones. The digitalrepeater 505 may perform a digital beamforming procedure associated withthe IQ samples of occupied tones. After performing the digitalbeamforming procedure, the digital repeater 505 may perform an iFFTprocedure and add a CP to the signal. As indicated above, the digitalrepeater 505 may convert the digital signal from the digital domain tothe analog domain using the DAC.

In some aspects, to facilitate performance of the fourth processingoption 540 by the digital repeater 505, the configuration may indicatefurther IEs associated with the reception configuration and/or thetransmission configuration. These further IEs may be in addition to IEsdescribed above in connection with the third processing option 535, thesecond processing option 530, the first processing option 525, and/orthe like.

In some aspects, for example, the reception configuration may indicate adigital receiver beamforming configuration, and the forwardingconfiguration may indicate a digital transmitter beamformingconfiguration. In some aspects, the reception configuration may indicateRE mapping information associated with the first signal, and theforwarding configuration may indicate RE mapping information associatedwith transmitting the second signal. In some aspects, the RE mappinginformation associated with the first signal may include a plurality ofindices corresponding to a plurality of occupied tones associated withthe first signal. In some aspects, the RE mapping information associatedwith forwarding the first signal may include a plurality of indicescorresponding to a plurality of occupied tones associated withtransmitting the second signal.

In the fifth processing option 545, in some aspects, the digitalrepeater 505 may perform further digital processing (which also mayinclude the fourth processing option, the third processing option, thesecond processing option, and the first processing option). In someaspects, in the fifth processing option 545, after performing thedigital beamforming procedure and the RE de-mapping operation, therepeater node may perform channel estimation and equalization associatedwith the incoming signal (e.g., to determine and/or remove noise andwireless channel variations associated with the incoming signal). Forexample, the first signal may include a source signal attenuated by awireless channel characteristic of a wireless channel that carries thefirst signal. The channel estimation may be performed based at least inpart on one or more reference signals transmitted by the control node510, the wireless node 515, and/or the like. In some aspects, performingthe fifth digital processing option 545 may include stabilizing, basedat least in part on the channel estimation, the wireless channelcharacteristic associated with the extracted set of REs (extractedduring performance of the fourth processing option 540) to generate aset of stabilized REs. The digital repeater 505 may generate the secondsignal based at least in part on the stabilized REs.

After performing channel estimation and equalization, the digitalrepeater 505 may perform a demodulation operation to determine a set ofcodewords associated with the incoming signal. The digital repeater 505may extract the codewords and may store the codewords in a buffer of thedigital repeater 505. The digital repeater 505 may use the codewords tore-generate the incoming signal in the Tx chain of the digital repeater505 (e.g., immediately after extracting the codewords or at a latertime). For example, the digital repeater 505 may perform a modulationoperation, a layer mapping operation, a pre-coding operation, anRE-mapping operation, and/or a digital beamforming procedure associatedwith the codewords.

In some aspects, to facilitate performance of the fifth processingoption 545 by the digital repeater 505, the configuration may indicatefurther IEs associated with the reception configuration and/or thetransmission configuration. These further IEs may be in addition to IEsdescribed above in connection with the fourth processing option 540, thethird processing option 535, the second processing option 530, the firstprocessing option 525, and/or the like.

For example, in some aspects, the reception configuration may indicate achannel estimation configuration. In some aspects, the channelestimation configuration may indicate a resource associated with areference signal, a configuration associated with the reference signal,and/or the like. In some aspects, the forwarding configuration mayindicate a layer mapping configuration, a precoding configuration,and/or the like.

In the sixth processing option 550, in some aspects, the digitalrepeater 505 may perform the sixth digital processing option (which alsomay include the fifth processing option, the fourth processing option,the third processing option, the second processing option, and the firstprocessing option). In some aspects, in the sixth processing option 550,for example, the digital repeater 505 may extract a transport block (orblocks) based at least in part on the set of stabilized REs. In someaspects, the digital repeater 505 may perform a de-scrambling operation(e.g., using scrambling identifiers associated with the incoming signal)to generate a set of descrambled REs. The digital repeater 505 maydecode the set of descrambled REs in accordance with a network codingscheme associated with the incoming signal to determine one or moretransport block. The digital repeater 505 may extract the transportblocks and may store the transport blocks in a buffer of the digitalrepeater 505.

The digital repeater 505 may use the transport blocks to re-generate theincoming signal in the Tx chain of the digital repeater 505 (e.g.,immediately after extracting the transport block or at a later time).For example, the digital repeater 505 may encode the transport blocks(e.g., in accordance with the network coding scheme) to generate a setof recoded REs. The digital repeater 505 may scramble the recoded REs tocreate a re-generated version of the first signal. The digital repeater505 may perform a modulation operation, a layer mapping operation, apre-coding operation, an RE-mapping operation, and/or a digitalbeamforming procedure associated with the scrambled transport block.

In some aspects, to facilitate performance of the sixth processingoption 550 by the digital repeater 505, the configuration may indicatefurther IEs associated with the reception configuration and/or thetransmission configuration. These further IEs may be in addition to IEsdescribed above in connection with the fifth processing option 545, thefourth processing option 540, the third processing option 535, thesecond processing option 530, the first processing option 525, and/orthe like.

In some aspects, for example, the reception configuration may indicate ascrambling identifier associated with the first signal, a codingconfiguration associated with the first signal, and/or the like. In someaspects, the scrambling identifier may include a front haul radionetwork temporary identifier (FH-RNTI). The FH-RNTI may correspond tothe digital repeater 505. In some aspects, the coding configuration mayindicate a modulation and coding scheme (MCS), a coding technique,and/or the like. In some aspects, the forwarding configuration mayindicate a scrambling identifier (e.g., an RNTI) associated withtransmitting the second signal, a coding configuration associated withtransmitting the second signal, and/or the like.

As described above, the digital repeater 505 may generate a secondsignal based at least in part on a digital processing operation. Asshown by reference number 565, the digital repeater 505 may transmit,and the wireless node 515 may receive, the second signal. In someaspects, the digital repeater 505 may transmit the second signal to thecontrol node 510, another wireless node (not shown in FIG. 5), and/orthe like.

As indicated above, FIG. 5 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 5.

FIG. 6 is a diagram illustrating an example 600 associated withforwarding a wireless signal using a digital repeater, in accordancewith the present disclosure. As shown in FIG. 6, a control node 605, adigital repeater 610, and a wireless node 615 may communicate with oneanother in a wireless network (e.g., wireless network 100).

In some aspects, the control node 605 may be, be similar to, include, orbe included in the control node 510 shown in FIG. 5, the control node410 shown in FIG. 4, and/or the like. In some aspects, the digitalrepeater 610 may be, be similar to, include, or be included in thedigital repeater 505 shown in FIG. 5, the digital repeater 405 shown inFIG. 4, and/or the like. In some aspects, the wireless node 615 may be,be similar to, include, or be included in the wireless node 515 shown inFIG. 5, the wireless node 415 shown in FIG. 4, the wireless node 420shown in FIG. 4, and/or the like.

As shown by reference number 620, the control node may transmit, and thedigital repeater 610 may receive, an information request. As describedabove in connection with FIG. 5, the information request may include arequest for a buffer status, a power status, a measurement report, acapability of the digital repeater, a configuration of the digitalrepeater, and/or the like. As shown by reference number 625, the digitalrepeater 610 may transmit, and the control node 605 may receive,capability information that may be used by the control node 605 todetermine a configuration for a repeating operation. In some aspects,the digital repeater 610 may provide any number of additional types ofinformation to the control node 605 such as, for example, a bufferstatus, a power status, a measurement report, a configuration of thedigital repeater, and/or the like.

As shown by reference number 630, the control node 605 may transmit, andthe digital repeater 610 may receive, a configuration for a repeatingoperation. As described above, the configuration may indicate a digitalprocessing operation. The digital processing operation may include adigital processing option selected from a plurality of digitalprocessing options, as explained above in connection with FIG. 5.

As shown by reference number 635, the control node 605 may transmit, andthe digital repeater 610 may receive, a first signal 635. In someaspects, the wireless node 615 may transmit the first signal 635 to thedigital repeater 610. In some aspects, another wireless node (not shownin FIG. 6) may transmit the first signal 635 to the digital repeater610. The digital repeater 610 may perform a digital processing operation640 to generate a second signal 645. The digital repeater 610 maytransmit, and the wireless node 615 may receive, the second signal 645.Alternatively, or additionally, the digital repeater 610 may transmitthe second signal 645 to the control node 605. In some aspects, thedigital repeater 610 may transmit the second signal 645 to anotherwireless node (not shown in FIG. 6).

As indicated above, FIG. 6 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 6.

FIG. 7 is a diagram illustrating an example 700 associated withforwarding a wireless signal using a digital repeater, in accordancewith the present disclosure. As shown in FIG. 7, a control node 705, adigital repeater 710, and a wireless node 715 may communicate with oneanother in a wireless network (e.g., wireless network 100).

In some aspects, the control node 705 may be, be similar to, include, orbe included in the control node 605 shown in FIG. 6, the control node510 shown in FIG. 5, the control node 410 shown in FIG. 4, and/or thelike. In some aspects, the digital repeater 710 may be, be similar to,include, or be included in the digital repeater 610 shown in FIG. 6, thedigital repeater 505 shown in FIG. 5, the digital repeater 405 shown inFIG. 4, and/or the like. In some aspects, the wireless node 715 may be,be similar to, include, or be included in the wireless node 615 shown inFIG. 6, the wireless node 515 shown in FIG. 5, the wireless node 415shown in FIG. 4, the wireless node 420 shown in FIG. 4, and/or the like.

Example 700 is an example of a repeating operation involving a downlinkcommunication. For example, the control node 705 may determine that itis to send a PDSCH communication to the wireless node 715. However, thecontrol node 705 may determine that the wireless node 715 is outside ofa communication range of the control node 705. Therefore, the controlnode 705 may utilize the digital repeater 710 to transmit the PDSCHcommunication to the wireless node 715.

As shown by reference number 720, the control node 705 may transmit aPDCCH communication to the digital repeater 710. The PDCCH communicationmay be an FH-PDCCH communication such as a control message (e.g., thecontrol message 455 shown in FIG. 4). As shown by reference number 725,the FH-PDCCH communication may schedule a PDSCH communication (e.g., anaccess link PDSCH communication) and/or a PDCCH communication (e.g., anFH-PDCCH, an access link PDCCH, and/or the like) that is to betransmitted to the digital repeater 710. As shown by reference number730, the FH-PDCCH communication may include a configuration (e.g., theconfiguration 450 shown in FIG. 4) that configures the digital repeater710 to forward the PDSCH communication and/or the PDCCH communicationthat is to be transmitted to wireless node 715. In some aspects, morethan one FH-PDCCH communication may be used to configure the digitalrepeater 710.

As shown by reference number 735, the control node 705 may transmit, tothe digital repeater 710, the PDSCH communication and/or the PDCCHcommunication scheduled by the PDCCH communication shown by referencenumber 720. As shown by reference number 740, the digital repeater 710may generate a PDCCH communication and/or a PDSCH communication based atleast in part on receiving the PDSCH communication from the controlnode. In some aspects, the digital repeater 710 may generate the PDCCHcommunication and/or the PDSCH communication based at least in part on adigital processing operation that was configured by the configurationshown by reference number 730. In some aspects, the generated PDCCHcommunication may schedule the generated PDSCH communication to betransmitted by the digital repeater 710.

As shown by reference number 745, the digital repeater 710 may transmitthe generated PDCCH communication to the wireless node 715 thatschedules the generated PDSCH communication. As shown by referencenumber 750, the digital repeater 710 may transmit the generated PDSCHcommunication to the wireless node 715. The digital repeater 710 maytransmit the generated PDCCH communication and the generated PDSCHcommunication to the wireless node 715 using an access link.

In some aspects, the configuration also may configure, using theFH-PDCCH communication and/or one or more other FH-PDCCH communications,a repeating operation (e.g., a digital processing operation, time domainresources, frequency domain resources, and/or the like) for an ACK/NACKfeedback message that may be transmitted by the wireless node 715 andaddressed to the control node 705. In some aspects, the configurationmay configure one or more repeating operations (e.g., a digitalprocessing operation, time domain resources, frequency domain resources,and/or the like) associated with future uplink transmissions that may betransmitted from the wireless node 715 and addressed to the control node705. In some aspects, the one or more repeating operation configurationsmay include configuring semi-static uplink control resources that may beused by the wireless node 715 to transmit control messages such as, forexample, scheduling requests.

As indicated above, FIG. 7 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 7.

FIG. 8 is a diagram illustrating an example 800 associated withforwarding a wireless signal using a digital repeater, in accordancewith the present disclosure. As shown in FIG. 8, a control node 805, adigital repeater 810, and a wireless node 815 may communicate with oneanother in a wireless network (e.g., wireless network 100).

In some aspects, the control node 805 may be, be similar to, include, orbe included in the control node 705 shown in FIG. 7, the control node605 shown in FIG. 6, the control node 510 shown in FIG. 5, the controlnode 410 shown in FIG. 4, and/or the like. In some aspects, the digitalrepeater 810 may be, be similar to, include, or be included in thedigital repeater 710 shown in FIG. 7, the digital repeater 610 shown inFIG. 6, the digital repeater 505 shown in FIG. 5, the digital repeater405 shown in FIG. 4, and/or the like. In some aspects, the wireless node815 may be, be similar to, include, or be included in the wireless node715 shown in FIG. 7, the wireless node 615 shown in FIG. 6, the wirelessnode 515 shown in FIG. 5, the wireless node 415 shown in FIG. 4, thewireless node 420 shown in FIG. 4, and/or the like.

Example 800 may be an example of a repeating operation involving anuplink communication. For example, the wireless node 815 may have anuplink communication to transmit to the control node 805. However, thecontrol node 805 may be outside of a communication range of the wirelessnode 815. As a result, the control node 805 may configure the digitalrepeater 810 to forward the uplink communication from the wireless node815 to the control node 805.

As shown by reference number 820, the control node 805 may transmit anFH-PDCCH communication to the digital repeater 810. In some aspects, theFH-PDCCH communication may include a content of a PDCCH communication tobe transmitted to the wireless node 815 (e.g., a scheduling grant, aresource allocation for an uplink transmission, and/or the like). Asshown by reference number 825, the FH-PDCCH communication may schedule aPDCCH communication to be transmitted to the digital repeater 810. Asshown by reference number 830, the FH-PDCCH communication may include aconfiguration indicating how the digital repeater 810 is to transmit are-generated version of the PDCCH communication to the wireless node 815(e.g., a resource allocation, a beamforming configuration, and/or thelike). In some aspects, as shown by reference number 835, the FH-PDCCHcommunication may include a configuration indicating how the digitalrepeater 810 is to receive the uplink communication from the wirelessnode 815 (e.g., a resource allocation, a beamforming configuration,and/or the like). In some aspects, as shown by reference number 840, theFH-PDCCH communication may include a configuration indicating how thedigital repeater 810 is to transmit a re-generated version of the uplinkcommunication to the control node 805. In some aspects, one or moreadditional FH-PDCCH communications may be used to transmit one or moreaspects of the configurations described above.

As shown by reference number 845, the control node 805 may transmit aPDCCH communication to the digital repeater 810. As shown by referencenumber 850, the digital repeater 810 may generate, based at least inpart on a configured digital processing operation, a re-generatedversion of the PDCCH communication to transmit to the wireless node 815to schedule an uplink communication. In some aspects, the digitalrepeater 810 may not generate a PDCCH communication (e.g., if the uplinkcommunication is semi-static, periodic, or pre-configured uplinktransmission that is not scheduled by a PDCCH communication). In thatcase, the downlink configuration may only indicate how the digitalrepeater 810 is to receive the uplink communication from the wirelessnode 815, how the digital repeater 810 is to generate another uplinkcommunication based at least in part on the uplink communication fromthe wireless node 815, and/or how the digital repeater 810 is totransmit the generated uplink communication to the control node 805.

As shown by reference number 855, the digital repeater 810 may transmitthe generated PDCCH communication to the wireless node 815. The digitalrepeater 810 may transmit the generated PDCCH communication using anaccess link. As shown by reference number 860, the generated PDCCHcommunication may schedule an uplink communication (e.g., a PUSCHcommunication and/or the like) to be transmitted by the wireless node815.

As shown by reference number 865, the wireless node 815 may transmit thePUSCH communication. In some aspects, the wireless node 815 may notaddress the PUSCH communication to the digital repeater 810 (e.g., thewireless node 815 may be unaware of the digital repeater 810 and maysimply be attempting to transmit the PUSCH communication to the controlnode 805). The digital repeater 810 may receive the PUSCH communicationbased at least in part on the configuration indicated by the controlnode 805. In some aspects, the wireless node 815 may transmit uplinkcontrol information (e.g., a PUCCH communication).

As shown by reference number 870, the digital repeater 810 may generatea re-generated version of the PUSCH communication based at least in parton the uplink communication (e.g., PUSCH communication or PUCCHcommunication) received from the wireless node 815. In some aspects, thedigital repeater 810 may generate the re-generated version of the PUSCHcommunication based at least in part on a configuration provided by thecontrol node 805. As shown by reference number 875, the digital repeater810 may transmit the generated PUSCH communication to the control node805. In some aspects, the digital repeater 810 may transmit thegenerated PUSCH communication to the control node 805 using a fronthaullink.

As indicated above, FIG. 8 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 8.

FIG. 9 is a diagram illustrating an example process 900 performed, forexample, by a digital repeater, in accordance with the presentdisclosure. Example process 900 is an example where the digital repeater(e.g., digital repeater 405 shown in FIG. 4, digital repeater 505 shownin FIG. 5, digital repeater 610 shown in FIG. 6, apparatus 1100 shown inFIG. 11, and/or the like) performs operations associated with techniquesfor forwarding a wireless signal using a digital repeater.

As shown in FIG. 9, in some aspects, process 900 may include receiving,using a control component of the digital repeater, a configuration thatindicates a digital processing operation, wherein the control componentreceives the configuration from a control node via a wireless controlinterface (block 910). For example, the digital repeater (e.g., usingreception component 1102 of FIG. 11) may receive, using a controlcomponent of the digital repeater, a configuration that indicates adigital processing operation, wherein the control component receives theconfiguration from a control node via a wireless control interface, asdescribed above.

As further shown in FIG. 9, in some aspects, process 900 may includereceiving a first signal (block 920). For example, the digital repeater(e.g., using reception component 1102 of FIG. 11) may receive a firstsignal, as described above.

As further shown in FIG. 9, in some aspects, process 900 may includeperforming, using a repeating component of the digital repeater, thedigital processing operation on the first signal to generate a secondsignal, wherein the second signal comprises a re-generated version ofthe first signal (block 930). For example, the digital repeater (e.g.,using processing component 1108 of FIG. 11) may perform, using arepeating component of the digital repeater, the digital processingoperation on the first signal to generate a second signal, wherein thesecond signal comprises a re-generated version of the first signal, asdescribed above.

As further shown in FIG. 9, in some aspects, process 900 may includetransmitting the second signal (block 940). For example, the digitalrepeater (e.g., using transmission component 1104 of FIG. 11) maytransmit the second signal, as described above.

Process 900 may include additional aspects, such as any single aspect orany combination of aspects described below and/or in connection with oneor more other processes described elsewhere herein.

In a first aspect, receiving the first signal comprises receiving amillimeter wave wireless signal.

In a second aspect, alone or in combination with the first aspect, theconfiguration indicates a beamforming configuration for at least one ofreceiving the first signal or transmitting the second signal.

In a third aspect, alone or in combination with one or more of the firstand second aspects, performing the digital processing operationcomprises obtaining a plurality of digital samples from the firstsignal, storing the plurality of digital samples, and extracting aplurality of tones from the plurality of digital samples.

In a fourth aspect, alone or in combination with one or more of thefirst through third aspects, the wireless control interface comprises anin-band control interface.

In a fifth aspect, alone or in combination with one or more of the firstthrough fourth aspects, the first signal is received using a frequency,and control messages are received via the in-band control interfaceusing the frequency.

In a sixth aspect, alone or in combination with one or more of the firstthrough fifth aspects, process 900 includes transmitting at least onecontrol message to the control node, wherein the at least one controlmessage indicates at least one of a configuration of the digitalrepeater, a capability of the digital repeater, or a status of thedigital repeater.

In a seventh aspect, alone or in combination with one or more of thefirst through sixth aspects, process 900 includes establishing, usingthe control component and a frequency, an access link to the controlnode.

In an eighth aspect, alone or in combination with one or more of thefirst through seventh aspects, process 900 includes receiving a BWPconfiguration that indicates a BWP corresponding to the wireless controlinterface.

In a ninth aspect, alone or in combination with one or more of the firstthrough eighth aspects, the configuration is carried by a controlmessage comprising at least one of DCI, an RRC message, or a MAC-CE.

In a tenth aspect, alone or in combination with one or more of the firstthrough ninth aspects, the configuration is carried in an FH-PDCCHcontrol message.

In an eleventh aspect, alone or in combination with one or more of thefirst through tenth aspects, the FH-PDCCH control message comprises DCIscrambled by an FH-RNTI, wherein the FH-RNTI is associated with thecontrol component.

In a twelfth aspect, alone or in combination with one or more of thefirst through eleventh aspects, the wireless control interface comprisesan out-of-band control interface.

In a thirteenth aspect, alone or in combination with one or more of thefirst through twelfth aspects, the first signal is received using afirst frequency and control messages are received via the controlinterface using a second frequency that is different than the firstfrequency.

In a fourteenth aspect, alone or in combination with one or more of thefirst through thirteenth aspects, the second frequency is lower than thefirst frequency.

In a fifteenth aspect, alone or in combination with one or more of thefirst through fourteenth aspects, the control component is based atleast in part on an LTE narrow band IoT UE.

In a sixteenth aspect, alone or in combination with one or more of thefirst through fifteenth aspects, the control component is based at leastin part on an NR sub-6 reduced capability UE.

In a seventeenth aspect, alone or in combination with one or more of thefirst through sixteenth aspects, the control component is based on a UEspecification that specifies a plurality of functions supported by theUE, and the control component does not support all of the plurality offunctions.

In an eighteenth aspect, alone or in combination with one or more of thefirst through seventeenth aspects, the first signal is received using afirst RAT, and control messages are received via the control interfaceusing a second RAT that is different than the first RAT.

In a nineteenth aspect, alone or in combination with one or more of thefirst through eighteenth aspects, the configuration is carried in acontrol message comprising at least one of a lower-layer controlmessage, an upper-layer control message, or an application-layer controlmessage.

In a twentieth aspect, alone or in combination with one or more of thefirst through nineteenth aspects, process 900 includes receiving, fromthe control node, a control message that indicates at least one of areception beamforming configuration associated with the first signal, areception time domain resource associated with the first signal, atransmission beamforming configuration associated with transmitting thesecond signal, or a transmission time domain resource associated withtransmitting the second signal.

In a twenty-first aspect, alone or in combination with one or more ofthe first through twentieth aspects, the reception beamformingconfiguration indicates an index associated with a beamforming codebook.

In a twenty-second aspect, alone or in combination with one or more ofthe first through twenty-first aspects, the reception beamformingconfiguration indicates at least one of a phase setting of an antennaelement of the digital repeater or an amplitude setting of the antennaelement of the digital repeater.

In a twenty-third aspect, alone or in combination with one or more ofthe first through twenty-second aspects, process 900 includestransmitting a control message to the control node, wherein the controlmessage indicates a beamforming capability of the digital repeater, andwherein the reception beamforming configuration is based at least inpart on the beamforming capability.

In a twenty-fourth aspect, alone or in combination with one or more ofthe first through twenty-third aspects, the transmission time domainresource is indicated relative to the reception time domain resource.

In a twenty-fifth aspect, alone or in combination with one or more ofthe first through twenty-fourth aspects, the transmission time domainresource is based at least in part on a synchronization characteristiccorresponding to a synchronization mode between the digital repeater andthe control node.

In a twenty-sixth aspect, alone or in combination with one or more ofthe first through twenty-fifth aspects, the synchronizationcharacteristic indicates a synchronous mode between the digital repeaterand the control node, the transmission time domain resource is based atleast in part on an indication of the reception time domain resource,and the indication of the reception time domain resource indicates atleast one of a symbol identifier, a slot identifier, or a frameidentifier.

In a twenty-seventh aspect, alone or in combination with one or more ofthe first through twenty-sixth aspects, the synchronizationcharacteristic indicates an asynchronous mode between the digitalrepeater and the control node, the transmission time domain resource isbased at least in part on an indication of a reference time domainresource, and the indication of the reference time domain resourceindicates at least one of a symbol identifier, a slot identifier, or aframe identifier.

In a twenty-eighth aspect, alone or in combination with one or more ofthe first through twenty-seventh aspects, process 900 includestransmitting, using the control component, an additional control messageto the control node, where the reference time domain resourcecorresponds to the additional control message.

In a twenty-ninth aspect, alone or in combination with one or more ofthe first through twenty-eighth aspects, the synchronizationcharacteristic indicates an out-of-sync synchronization mode between thedigital repeater and the control node, the transmission time domainresource is based at least in part on a reference time domain resource,and the reference time domain resource corresponds to the configuration.

In a thirtieth aspect, alone or in combination with one or more of thefirst through twenty-ninth aspects, process 900 includes transmitting acontrol message to the control node, wherein the control messageincludes one or more IEs, the one or more IEs indicating at least one ofan operation supported by the digital repeater, a beamforming codebookcharacteristic, a beamforming capability, a transmitter powerconfiguration, a timing configuration, a buffer status, an ADCconfiguration, an ADC setting, a DAC configuration, a DAC setting, an IQsample compression capability, an IQ sample decompression capability, anIQ sample compression setting, or an IQ sample decompression setting.

In a thirty-first aspect, alone or in combination with one or more ofthe first through thirtieth aspects, the beamforming codebookcharacteristic indicates at least one of a number of transmitter beamsavailable, a number of receiver beams available, a spatial quasico-location characteristic associated with a beam, a number of antennaarrays, a number of antenna panels, an association between a beam and anantenna array, or an association between a beam and an antenna panel.

In a thirty-second aspect, alone or in combination with one or more ofthe first through thirty-first aspects, the transmitter powerconfiguration indicates at least one of a power headroom, a maximumtransmitter power, a maximum gain level, a current gain setting, or acurrent transmitter power.

In a thirty-third aspect, alone or in combination with one or more ofthe first through thirty-second aspects, the timing configurationindicates at least one of a level of synchronization between the digitalrepeater and the control node, a synchronous operation supported by thedigital repeater, or an asynchronous operation supported by the digitalrepeater.

In a thirty-fourth aspect, alone or in combination with one or more ofthe first through thirty-third aspects, the buffer status indicates atleast one of an available memory, a maximum buffer size, or a bufferoverflow.

In a thirty-fifth aspect, alone or in combination with one or more ofthe first through thirty-fourth aspects, the first signal comprises atleast one of a PDCCH transmission, a PDSCH transmission, a PUCCHtransmission, a PUSCH transmission, or an ACK/NACK feedback message.

In a thirty-sixth aspect, alone or in combination with one or more ofthe first through thirty-fifth aspects, the digital processing operationcomprises a digital processing option selected from a plurality ofdigital processing options.

In a thirty-seventh aspect, alone or in combination with one or more ofthe first through thirty-sixth aspects, the digital processing option isbased at least in part on at least one of time domain IQ samplebuffering, tone extraction, element extraction, channeling estimationand equalization, or decoding the first signal.

In a thirty-eighth aspect, alone or in combination with one or more ofthe first through thirty-seventh aspects, the configuration comprises atleast one control IE, the at least one control IE indicating a receptionconfiguration, a buffering configuration, a forwarding configuration, oran information request.

In a thirty-ninth aspect, alone or in combination with one or more ofthe first through thirty-eighth aspects, the reception configurationindicates at least one of a reception analog beamforming configuration,a time domain resource associated with the first signal, a frequencydomain resource associated with the first signal, a numerologyassociated with the first signal, a digital receiver beamformingconfiguration, RE mapping information associated with the first signal,a channel estimation configuration, a scrambling identifier associatedwith the first signal, or a coding configuration associated with thefirst signal.

In a fortieth aspect, alone or in combination with one or more of thefirst through thirty-ninth aspects, the frequency domain resourceassociated with the first signal comprises at least one of a centerfrequency, a bandwidth, or a bandwidth part.

In a forty-first aspect, alone or in combination with one or more of thefirst through fortieth aspects, the numerology associated with the firstsignal comprises at least one of a CP size, an SCS, or an FFT size.

In a forty-second aspect, alone or in combination with one or more ofthe first through forty-first aspects, the RE mapping informationassociated with the first signal comprises a plurality of indicescorresponding to a plurality of occupied tones associated with the firstsignal.

In a forty-third aspect, alone or in combination with one or more of thefirst through forty-second aspects, the channel estimation configurationindicates at least one of a resource associated with a reference signal,or a configuration associated with the reference signal.

In a forty-fourth aspect, alone or in combination with one or more ofthe first through forty-third aspects, the coding configurationindicates at least one of an MCS or a coding technique.

In a forty-fifth aspect, alone or in combination with one or more of thefirst through forty-fourth aspects, the buffering configurationindicates at least one of an ADC setting, a DAC setting, an IQ samplecompression setting, or an IQ sample decompression setting.

In a forty-sixth aspect, alone or in combination with one or more of thefirst through forty-fifth aspects, the ADC setting comprises at leastone of an ADC resolution, or a sample rate.

In a forty-seventh aspect, alone or in combination with one or more ofthe first through forty-sixth aspects, the forwarding configurationcomprises at least one of a transmission beamforming configuration, atime domain resource associated with transmitting the second signal, atransmission power setting, a transmission amplification setting, atransmission center frequency, a numerology associated with transmittingthe second signal, a digital transmitter beamforming configuration, REmapping information associated with transmitting the second signal, alayer mapping configuration, a precoding configuration, a scramblingidentifier associated with transmitting the second signal, or a codingconfiguration associated with transmitting the second signal.

In a forty-eighth aspect, alone or in combination with one or more ofthe first through forty-seventh aspects, the numerology associated withforwarding the first signal comprises at least one of a CP size, an SCS,or an FFT size.

In a forty-ninth aspect, alone or in combination with one or more of thefirst through forty-eighth aspects, the RE mapping informationassociated with forwarding the first signal comprises a plurality ofindices corresponding to a plurality of occupied tones associated withtransmitting the second signal.

In a fiftieth aspect, alone or in combination with one or more of thefirst through forty-ninth aspects, the information request comprises arequest for at least one of a buffer status, a power status, ameasurement report, a capability of the digital repeater, or aconfiguration of the digital repeater.

In a fifty-first aspect, alone or in combination with one or more of thefirst through fiftieth aspects, the request for the power statuscomprises a request for a power headroom of the digital repeater.

In a fifty-second aspect, alone or in combination with one or more ofthe first through fifty-first aspects, the request for the measurementreport comprises a request for a signal quality measurement.

In a fifty-third aspect, alone or in combination with one or more of thefirst through fifty-second aspects, process 900 includes transmitting aperiodic report to the control node, wherein the periodic reportindicates at least one of a capability of the digital repeater, or aconfiguration of the digital repeater.

Although FIG. 9 shows example blocks of process 900, in some aspects,process 900 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 9.Additionally, or alternatively, two or more of the blocks of process 900may be performed in parallel.

FIG. 10 is a diagram illustrating an example process 1000 performed, forexample, by a control node, in accordance with the present disclosure.Example process 1000 is an example where the control node (e.g., controlnode 410 shown in FIG. 4, control node 510 shown in FIG. 5, control node605 shown in FIG. 6, apparatus 1200 shown in FIG. 12, and/or the like)performs operations associated with techniques for forwarding a wirelesssignal using a digital repeater.

As shown in FIG. 10, in some aspects, process 1000 may includedetermining a configuration for a repeating operation that facilitatesforwarding a first signal from a first wireless node to a secondwireless node, wherein the configuration indicates a digital processingoperation for regenerating the first signal to create a second signal,and wherein the digital processing operation comprises a digitalprocessing option selected from a plurality of digital processingoptions (block 1010). For example, the control node (e.g., usingdetermining component 1208) may determine a configuration for arepeating operation that facilitates forwarding a first signal from afirst wireless node to a second wireless node, wherein the configurationindicates a digital processing operation for regenerating the firstsignal to create a second signal, and wherein the digital processingoperation comprises a digital processing option selected from aplurality of digital processing options, as described above.

As further shown in FIG. 10, in some aspects, process 1000 may includetransmitting the configuration to a control component of a digitalrepeater via a wireless control interface (block 1020). For example, thedigital repeater (e.g., using transmission component 1204) may transmitthe configuration to a control component of a digital repeater via awireless control interface, as described above.

Process 1000 may include additional aspects, such as any single aspector any combination of aspects described below and/or in connection withone or more other processes described elsewhere herein.

In a first aspect, the first signal comprises a millimeter wave wirelesssignal.

In a second aspect, alone or in combination with the first aspect, theconfiguration indicates a beamforming configuration for at least one ofreceiving the first signal or transmitting the second signal.

In a third aspect, alone or in combination with one or more of the firstand second aspects, the digital processing operation is configured tofacilitate extraction of a plurality of tones from the first signal.

In a fourth aspect, alone or in combination with one or more of thefirst through third aspects, the wireless control interface comprises anin-band control interface.

In a fifth aspect, alone or in combination with one or more of the firstthrough fourth aspects, process 1000 includes receiving at least onecontrol message from the digital repeater, where the at least onecontrol message indicates at least one of a configuration of the digitalrepeater, a capability of the digital repeater, or a status of thedigital repeater.

In a sixth aspect, alone or in combination with one or more of the firstthrough fifth aspects, process 1000 includes establishing an access linkwith the control component of the control node.

In a seventh aspect, alone or in combination with one or more of thefirst through sixth aspects, process 1000 includes transmitting, to thedigital repeater, a BWP configuration that indicates a BWP correspondingto the wireless control interface.

In an eighth aspect, alone or in combination with one or more of thefirst through seventh aspects, the configuration is carried by a controlmessage comprising at least one of DCI, an RRC message, or a MAC-CE.

In a ninth aspect, alone or in combination with one or more of the firstthrough eighth aspects, the configuration is carried in an FH-PDCCHcontrol message.

In a tenth aspect, alone or in combination with one or more of the firstthrough ninth aspects, the FH-PDCCH control message comprises downlinkcontrol information scrambled by an FH-RNTI, wherein the FH-RNTI isassociated with the control component.

In an eleventh aspect, alone or in combination with one or more of thefirst through tenth aspects, the wireless control interface comprises anout-of-band control interface.

In a twelfth aspect, alone or in combination with one or more of thefirst through eleventh aspects, the control component is based at leastin part on an LTE narrow band IoT UE.

In a thirteenth aspect, alone or in combination with one or more of thefirst through twelfth aspects, the control component is based at leastin part on an NR sub-6 reduced capability UE.

In a fourteenth aspect, alone or in combination with one or more of thefirst through thirteenth aspects, the control component is based on a UEspecification that specifies a plurality of functions supported by theUE, and the control component does not support all of the plurality offunctions.

In a fifteenth aspect, alone or in combination with one or more of thefirst through fourteenth aspects, the configuration is carried in acontrol message comprising at least one of a lower-layer controlmessage, an upper-layer control message, or an application-layer controlmessage.

In a sixteenth aspect, alone or in combination with one or more of thefirst through fifteenth aspects, process 1000 includes transmitting, tothe digital repeater, a control message that indicates at least one of areception beamforming configuration associated with the first signal, areception time domain resource associated with the first signal, atransmission beamforming configuration associated with transmitting thesecond signal, or a transmission time domain resource associated withtransmitting the second signal.

In a seventeenth aspect, alone or in combination with one or more of thefirst through sixteenth aspects, the reception beamforming configurationindicates an index associated with a beamforming codebook.

In an eighteenth aspect, alone or in combination with one or more of thefirst through seventeenth aspects, the reception beamformingconfiguration indicates at least one of a phase setting of an antennaelement of the digital repeater, or an amplitude setting of the antennaelement of the digital repeater.

In a nineteenth aspect, alone or in combination with one or more of thefirst through eighteenth aspects, process 1000 includes receiving acontrol message from the digital repeater, the control message indicatesa beamforming capability of the digital repeater, and the receptionbeamforming configuration is based at least in part on the beamformingcapability.

In a twentieth aspect, alone or in combination with one or more of thefirst through nineteenth aspects, the transmission time domain resourceis indicated relative to the reception time domain resource.

In a twenty-first aspect, alone or in combination with one or more ofthe first through twentieth aspects, the transmission time domainresource is based at least in part on a synchronization characteristiccorresponding to a synchronization mode between the digital repeater andthe control node.

In a twenty-second aspect, alone or in combination with one or more ofthe first through twenty-first aspects, the synchronizationcharacteristic indicates a synchronous mode between the digital repeaterand the control node, and the transmission time domain resource is basedat least in part on an indication of the reception time domain resource,wherein the indication of the reception time domain resource indicatesat least one of a symbol identifier, a slot identifier, or a frameidentifier.

In a twenty-third aspect, alone or in combination with one or more ofthe first through twenty-second aspects, the synchronizationcharacteristic indicates an asynchronous mode between the digitalrepeater and the control node, and the transmission time domain resourceis based at least in part on an indication of a reference time domainresource, wherein the indication of the reference time domain resourceindicates at least one of a symbol identifier, a slot identifier, or aframe identifier.

In a twenty-fourth aspect, alone or in combination with one or more ofthe first through twenty-third aspects, process 1000 includes receiving,from the control component, an additional control message, where thereference time domain resource corresponds to the additional controlmessage.

In a twenty-fifth aspect, alone or in combination with one or more ofthe first through twenty-fourth aspects, the synchronizationcharacteristic indicates an out-of-sync synchronization mode between thedigital repeater and the control node, and the transmission time domainresource is based at least in part on a reference time domain resource,wherein the reference time domain resource corresponds to theconfiguration.

In a twenty-sixth aspect, alone or in combination with one or more ofthe first through twenty-fifth aspects, process 1000 includes receivinga control message from the digital repeater, wherein the control messageincludes one or more IEs, the one or more IEs indicating at least one ofan operation supported by the digital repeater, a beamforming codebookcharacteristic, a beamforming capability, a transmitter powerconfiguration, a timing configuration, a buffer status, an ADCconfiguration, an ADC setting, a DAC configuration, a DAC setting, an IQsample compression capability, an IQ sample decompression capability, anIQ sample compression setting, or an IQ sample decompression setting.

In a twenty-seventh aspect, alone or in combination with one or more ofthe first through twenty-sixth aspects, the beamforming codebookcharacteristic indicates at least one of a number of transmitter beamsavailable, a number of receiver beams available, a spatial quasico-location characteristic associated with a beam, a number of antennaarrays, a number of antenna panels, an association between a beam and anantenna array, or an association between a beam and an antenna panel.

In a twenty-eighth aspect, alone or in combination with one or more ofthe first through twenty-seventh aspects, the transmitter powerconfiguration indicates at least one of a power headroom, a maximumtransmitter power, a maximum gain level, a current gain setting, or acurrent transmitter power.

In a twenty-ninth aspect, alone or in combination with one or more ofthe first through twenty-eighth aspects, the timing configurationindicates at least one of a level of synchronization between the digitalrepeater and the control node, a synchronous operation supported by thedigital repeater, or an asynchronous operation supported by the digitalrepeater.

In a thirtieth aspect, alone or in combination with one or more of thefirst through twenty-ninth aspects, the buffer status indicates at leastone of an available memory, a maximum buffer size, or a buffer overflow.

In a thirty-first aspect, alone or in combination with one or more ofthe first through thirtieth aspects, the first signal comprises at leastone of a PDCCH transmission, a PDSCH transmission, a PUCCH transmission,a PUSCH transmission, or an ACK/NACK feedback message.

In a thirty-second aspect, alone or in combination with one or more ofthe first through thirty-first aspects, the digital processing operationcomprises a digital processing option selected from a plurality ofdigital processing options.

In a thirty-third aspect, alone or in combination with one or more ofthe first through thirty-second aspects, the digital processing optionis based at least in part on at least one of time IQ sample buffering,tone extraction, element extraction, channeling estimation andequalization, or decoding the first signal.

In a thirty-fourth aspect, alone or in combination with one or more ofthe first through thirty-third aspects, the configuration comprises atleast one IE, the at least one control IE indicating a receptionconfiguration, a buffering configuration, a forwarding configuration, oran information request.

In a thirty-fifth aspect, alone or in combination with one or more ofthe first through thirty-fourth aspects, the reception configurationindicates at least one of a reception analog beamforming configuration,a time domain resource associated with the first signal, a frequencydomain resource associated with the first signal, a numerologyassociated with the first signal, a digital receiver beamformingconfiguration, RE mapping information associated with the first signal,a channel estimation configuration, a scrambling identifier associatedwith the first signal, or a coding configuration associated with thefirst signal.

In a thirty-sixth aspect, alone or in combination with one or more ofthe first through thirty-fifth aspects, the frequency domain resourceassociated with the first signal comprises at least one of a centerfrequency, a bandwidth, or a bandwidth part.

In a thirty-seventh aspect, alone or in combination with one or more ofthe first through thirty-sixth aspects, the numerology associated withthe first signal comprises at least one of a CP size, an SCS, or an FFTsize.

In a thirty-eighth aspect, alone or in combination with one or more ofthe first through thirty-seventh aspects, the RE mapping informationassociated with the first signal comprises a plurality of indicescorresponding to a plurality of occupied tones associated with the firstsignal.

In a thirty-ninth aspect, alone or in combination with one or more ofthe first through thirty-eighth aspects, the channel estimationconfiguration indicates at least one of a resource associated with areference signal, or a configuration associated with the referencesignal.

In a fortieth aspect, alone or in combination with one or more of thefirst through thirty-ninth aspects, the coding configuration indicatesat least one of an MCS or a coding technique.

In a forty-first aspect, alone or in combination with one or more of thefirst through fortieth aspects, the buffering configuration indicates atleast one of an ADC setting, a DAC setting, an IQ sample compressionsetting, or an IQ sample decompression setting.

In a forty-second aspect, alone or in combination with one or more ofthe first through forty-first aspects, the ADC setting comprises atleast one of an ADC resolution, or a sample rate.

In a forty-third aspect, alone or in combination with one or more of thefirst through forty-second aspects, the forwarding configurationcomprises at least one of a transmission beamforming configuration, atime domain resource associated with transmitting the second signal, atransmission power setting, a transmission amplification setting, atransmission center frequency, a numerology associated with transmittingthe second signal, a digital transmitter beamforming configuration, REmapping information associated with transmitting the second signal, alayer mapping configuration, a precoding configuration, a scramblingidentifier associated with transmitting the second signal, or a codingconfiguration associated with transmitting the second signal.

In a forty-fourth aspect, alone or in combination with one or more ofthe first through forty-third aspects, the numerology associated withforwarding the first signal comprises at least one of a CP size, an SCS,or an FFT size.

In a forty-fifth aspect, alone or in combination with one or more of thefirst through forty-fourth aspects, the RE mapping informationassociated with forwarding the first signal comprises a plurality ofindices corresponding to a plurality of occupied tones associated withtransmitting the second signal.

In a forty-sixth aspect, alone or in combination with one or more of thefirst through forty-fifth aspects, the information request comprises arequest for at least one of a buffer status, a power status, ameasurement report, a capability of the digital repeater, or aconfiguration of the digital repeater.

In a forty-seventh aspect, alone or in combination with one or more ofthe first through forty-sixth aspects, the request for the power statuscomprises a request for a power headroom of the digital repeater.

In a forty-eighth aspect, alone or in combination with one or more ofthe first through forty-seventh aspects, the request for the measurementreport comprises a request for a signal quality measurement.

In a forty-ninth aspect, alone or in combination with one or more of thefirst through forty-eighth aspects, process 1000 includes receiving aperiodic report from the digital repeater, wherein the periodic reportindicates at least one of a capability of the digital repeater, or aconfiguration of the digital repeater.

In a fiftieth aspect, alone or in combination with one or more of thefirst through forty-ninth aspects, process 1000 includes communicatingwith a wireless node, via the digital repeater, based at least in parton the configuration.

Although FIG. 10 shows example blocks of process 1000, in some aspects,process 1000 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 10.Additionally, or alternatively, two or more of the blocks of process1000 may be performed in parallel.

FIG. 11 is a block diagram of an example apparatus 1100 for wirelesscommunication. The apparatus 1100 may be a digital repeater, or adigital repeater may include the apparatus 1100. In some aspects, theapparatus 1100 includes a reception component 1102 and a transmissioncomponent 1104, which may be in communication with one another (forexample, via one or more buses and/or one or more other components). Asshown, the apparatus 1100 may communicate with another apparatus 1106(such as a UE, a base station, or another wireless communication device)using the reception component 1102 and the transmission component 1104.As further shown, the apparatus 1100 may include a processing component1108, among other examples.

In some aspects, the apparatus 1100 may be configured to perform one ormore operations described herein in connection with FIGS. 4-8.Additionally or alternatively, the apparatus 1100 may be configured toperform one or more processes described herein, such as process 900 ofFIG. 9. In some aspects, the apparatus 1100 and/or one or morecomponents shown in FIG. 11 may include one or more components of thedigital repeater described above in connection with FIG. 2.Additionally, or alternatively, one or more components shown in FIG. 11may be implemented within one or more components described above inconnection with FIG. 2. Additionally or alternatively, one or morecomponents of the set of components may be implemented at least in partas software stored in a memory. For example, a component (or a portionof a component) may be implemented as instructions or code stored in anon-transitory computer-readable medium and executable by a controlleror a processor to perform the functions or operations of the component.

The reception component 1102 may receive communications, such asreference signals, control information, data communications, or acombination thereof, from the apparatus 1106. The reception component1102 may provide received communications to one or more other componentsof the apparatus 1100. In some aspects, the reception component 1102 mayperform signal processing on the received communications (such asfiltering, amplification, demodulation, analog-to-digital conversion,demultiplexing, deinterleaving, de-mapping, equalization, interferencecancellation, or decoding, among other examples), and may provide theprocessed signals to the one or more other components of the apparatus1106. In some aspects, the reception component 1102 may include one ormore antennas, a demodulator, a MIMO detector, a receive processor, acontroller/processor, a memory, or a combination thereof, of the digitalrepeater described above in connection with FIG. 2.

The transmission component 1104 may transmit communications, such asreference signals, control information, data communications, or acombination thereof, to the apparatus 1106. In some aspects, one or moreother components of the apparatus 1106 may generate communications andmay provide the generated communications to the transmission component1104 for transmission to the apparatus 1106. In some aspects, thetransmission component 1104 may perform signal processing on thegenerated communications (such as filtering, amplification, modulation,digital-to-analog conversion, multiplexing, interleaving, mapping, orencoding, among other examples), and may transmit the processed signalsto the apparatus 1106. In some aspects, the transmission component 1104may include one or more antennas, a modulator, a transmit MIMOprocessor, a transmit processor, a controller/processor, a memory, or acombination thereof, of the digital repeater described above inconnection with FIG. 2. In some aspects, the transmission component 1104may be co-located with the reception component 1102 in a transceiver.

The reception component 1102 may receive, using a control component ofthe digital repeater, a configuration that indicates a digitalprocessing operation, wherein the control component receives theconfiguration from a control node via a wireless control interface. Thereception component 1102 may receive a first signal. The processingcomponent 1108 may perform, using a repeating component of the digitalrepeater, the digital processing operation on the first signal togenerate a second signal, wherein the second signal comprises are-generated version of the first signal. In some aspects, theprocessing component 1108 may include one or more antennas, ademodulator, a MIMO detector, a receive processor, a modulator, atransmit MIMO processor, a transmit processor, a controller/processor, amemory, or a combination thereof, of the digital repeater describedabove in connection with FIG. 2. The transmission component 1104 maytransmit the second signal.

The transmission component 1104 may transmit, using the frequency, atleast one control message to the control node, wherein the at least onecontrol message indicates at least one of a configuration of the digitalrepeater, a capability of the digital repeater, or a status of thedigital repeater.

The reception component 1102 and/or the transmission component 1104 mayestablish, using the control component and a frequency, an access linkto the control node.

The reception component 1102 may receive a BWP configuration thatindicates a BWP corresponding to the wireless control interface.

The reception component 1102 may receive, from the control node, acontrol message that indicates at least one of a reception beamformingconfiguration associated with the first signal, a reception time domainresource associated with the first signal, a transmission beamformingconfiguration associated with transmitting the second signal, or atransmission time domain resource associated with transmitting thesecond signal.

The transmission component 1104 may transmit a control message to thecontrol node, wherein the control message indicates a beamformingcapability of the digital repeater wherein the reception beamformingconfiguration is based at least in part on the beamforming capability.

The transmission component 1104 may transmit, using the controlcomponent, an additional control message to the control node, whereinthe reference time domain resource corresponds to the additional controlmessage.

The transmission component 1104 may transmit a control message to thecontrol node, wherein the control message includes one or more IEs, theone or more IEs indicating at least one of an operation supported by thedigital repeater, a beamforming codebook characteristic, a beamformingcapability, a transmitter power configuration, a timing configuration, abuffer status, an ADC configuration, an ADC setting, a DACconfiguration, a DAC setting, an IQ capability, or an IQ setting.

The transmission component 1104 may transmit a periodic report to thecontrol node, wherein the periodic report indicates at least one of acapability of the digital repeater, or a configuration of the digitalrepeater.

The number and arrangement of components shown in FIG. 11 are providedas an example. In practice, there may be additional components, fewercomponents, different components, or differently arranged componentsthan those shown in FIG. 11. Furthermore, two or more components shownin FIG. 11 may be implemented within a single component, or a singlecomponent shown in FIG. 11 may be implemented as multiple, distributedcomponents. Additionally or alternatively, a set of (one or more)components shown in FIG. 11 may perform one or more functions describedas being performed by another set of components shown in FIG. 11.

FIG. 12 is a block diagram of an example apparatus 1200 for wirelesscommunication. The apparatus 1200 may be a control node, or a controlnode may include the apparatus 1200. In some aspects, the apparatus 1200includes a reception component 1202 and a transmission component 1204,which may be in communication with one another (for example, via one ormore buses and/or one or more other components). As shown, the apparatus1200 may communicate with another apparatus 1206 (such as a UE, a basestation, or another wireless communication device) using the receptioncomponent 1202 and the transmission component 1204. As further shown,the apparatus 1200 may include a determining component 1208, among otherexamples.

In some aspects, the apparatus 1200 may be configured to perform one ormore operations described herein in connection with FIGS. 4-8.Additionally or alternatively, the apparatus 1200 may be configured toperform one or more processes described herein, such as process 1000 ofFIG. 10. In some aspects, the apparatus 1200 and/or one or morecomponents shown in FIG. 12 may include one or more components of thecontrol node described above in connection with FIG. 2. Additionally, oralternatively, one or more components shown in FIG. 12 may beimplemented within one or more components described above in connectionwith FIG. 2. Additionally or alternatively, one or more components ofthe set of components may be implemented at least in part as softwarestored in a memory. For example, a component (or a portion of acomponent) may be implemented as instructions or code stored in anon-transitory computer-readable medium and executable by a controlleror a processor to perform the functions or operations of the component.

The reception component 1202 may receive communications, such asreference signals, control information, data communications, or acombination thereof, from the apparatus 1206. The reception component1202 may provide received communications to one or more other componentsof the apparatus 1200. In some aspects, the reception component 1202 mayperform signal processing on the received communications (such asfiltering, amplification, demodulation, analog-to-digital conversion,demultiplexing, deinterleaving, de-mapping, equalization, interferencecancellation, or decoding, among other examples), and may provide theprocessed signals to the one or more other components of the apparatus1206. In some aspects, the reception component 1202 may include one ormore antennas, a demodulator, a MIMO detector, a receive processor, acontroller/processor, a memory, or a combination thereof, of the controlnode described above in connection with FIG. 2.

The transmission component 1204 may transmit communications, such asreference signals, control information, data communications, or acombination thereof, to the apparatus 1206. In some aspects, one or moreother components of the apparatus 1206 may generate communications andmay provide the generated communications to the transmission component1204 for transmission to the apparatus 1206. In some aspects, thetransmission component 1204 may perform signal processing on thegenerated communications (such as filtering, amplification, modulation,digital-to-analog conversion, multiplexing, interleaving, mapping, orencoding, among other examples), and may transmit the processed signalsto the apparatus 1206. In some aspects, the transmission component 1204may include one or more antennas, a modulator, a transmit MIMOprocessor, a transmit processor, a controller/processor, a memory, or acombination thereof, of the control node described above in connectionwith FIG. 2. In some aspects, the transmission component 1204 may beco-located with the reception component 1202 in a transceiver.

The reception component 1202 may receive one or more control messagesfrom a digital repeater via a wireless control interface. The one ormore control messages may include a configuration of the digitalrepeater, a capability of the digital repeater, a status of the digitalrepeater, and/or the like. The determining component 1208 may determine,based at least in part on the configuration of the digital repeater, thecapability of the digital repeater, the status of the digital repeater,and/or the like, the digital processing operation to be performed by thedigital repeater on the first signal to generate a second signal. Insome aspects, the determining component 1208 may include one or moreantennas, a demodulator, a MIMO detector, a receive processor, amodulator, a transmit MIMO processor, a transmit processor, acontroller/processor, a memory, or a combination thereof, of the controlnode described above in connection with FIG. 2.

The transmission component 1204 may transmit, to a control component ofa digital repeater via a wireless control interface, a configuration fora repeating operation that facilitates forwarding a first signal from afirst wireless node to a second wireless node, wherein the configurationindicates a digital processing operation for regenerating the firstsignal to create a second signal, wherein the digital processingoperation comprises a digital processing option selected from aplurality of digital processing options. The reception component 1202and/or the transmission component 1204 may communicate with a wirelessnode, via the digital repeater, based at least in part on theconfiguration.

The transmission component 1204 may transmit the first signal to thedigital repeater, wherein the first signal is transmitted using afrequency.

The transmission component 1204 may transmit control messages to thedigital repeater via the in-band control interface using the frequency.

The reception component 1202 and/or the transmission component 1204 mayestablish an access link with the control component of the control node.

The transmission component 1204 may transmit, to the digital repeater, aBWP configuration that indicates a BWP corresponding to the wirelesscontrol interface.

The transmission component 1204 may transmit the first signal using afirst RAT and control messages via the control interface using a secondRAT that is different than the first RAT.

The transmission component 1204 may transmit, to the digital repeater, acontrol message that indicates at least one of a reception beamformingconfiguration associated with the first signal, a reception time domainresource associated with the first signal, a transmission beamformingconfiguration associated with transmitting the second signal, or atransmission time domain resource associated with transmitting thesecond signal.

The reception component 1202 may receive a control message from thedigital repeater, wherein the control message indicates a beamformingcapability of the digital repeater wherein the reception beamformingconfiguration is based at least in part on the beamforming capability.

The reception component 1202 may receive, from the control component, anadditional control message, wherein the reference time domain resourcecorresponds to the additional control message.

The reception component 1202 may receive a control message from thedigital repeater, wherein the control message includes one or more IEs,the one or more IEs indicating at least one of an operation supported bythe digital repeater, a beamforming codebook characteristic, abeamforming capability, a transmitter power configuration, a timingconfiguration, a buffer status, an ADC configuration, an ADC setting, aDAC configuration, a DAC setting, an IQ capability, or an IQ setting.

The reception component 1202 may receive a periodic report from thedigital repeater, wherein the periodic report indicates at least one ofa capability of the digital repeater or a configuration of the digitalrepeater.

The number and arrangement of components shown in FIG. 12 are providedas an example. In practice, there may be additional components, fewercomponents, different components, or differently arranged componentsthan those shown in FIG. 12. Furthermore, two or more components shownin FIG. 12 may be implemented within a single component, or a singlecomponent shown in FIG. 12 may be implemented as multiple, distributedcomponents. Additionally or alternatively, a set of (one or more)components shown in FIG. 12 may perform one or more functions describedas being performed by another set of components shown in FIG. 12.

The following provides an overview of some Aspects of the presentdisclosure:

Aspect 1: A method of wireless communication performed by a digitalrepeater, comprising: receiving, using a control component of thedigital repeater, a configuration that indicates a digital processingoperation, wherein the control component receives the configuration froma control node via a wireless control interface; receiving a firstsignal; performing, using a repeating component of the digital repeater,the digital processing operation on the first signal to generate asecond signal, wherein the second signal comprises a re-generatedversion of the first signal; and transmitting the second signal.

Aspect 2: The method of Aspect 1, wherein receiving the first signalcomprises receiving a millimeter wave wireless signal.

Aspect 3: The method of either of Aspects 1 or 2, wherein theconfiguration indicates a beamforming configuration for at least one ofreceiving the first signal or transmitting the second signal.

Aspect 4: The method of any of Aspects 1-3, wherein performing thedigital processing operation comprises: obtaining a plurality of digitalsamples from the first signal; storing the plurality of digital samples;and extracting a plurality of tones from the plurality of digitalsamples.

Aspect 5: The method of any of Aspects 1-4, wherein the wireless controlinterface comprises an in-band control interface.

Aspect 6: The method of Aspect 5, wherein the first signal is receivedusing a frequency, and wherein control messages are received via thein-band control interface using the frequency.

Aspect 7: The method of any of Aspects 1-6, further comprisingtransmitting at least one control message to the control node, whereinthe at least one control message indicates at least one of: aconfiguration of the digital repeater, a capability of the digitalrepeater, or a status of the digital repeater.

Aspect 8: The method of any of Aspects 1-7, further comprisingestablishing, using the control component and a frequency, an accesslink to the control node.

Aspect 9: The method of any of Aspects 1-8, further comprising receivinga bandwidth part (BWP) configuration that indicates a BWP correspondingto the wireless control interface.

Aspect 10: The method of any of Aspects 1-9, wherein the configurationis carried by a control message comprising at least one of: downlinkcontrol information, a radio resource control message, or a mediumaccess control (MAC) control element.

Aspect 11: The method of any of Aspects 1-10, wherein the configurationis carried in a front haul physical downlink control channel (FH-PDCCH)control message.

Aspect 12: The method of Aspect 11, wherein the FH-PDCCH control messagecomprises downlink control information scrambled by a front haul radionetwork temporary identifier (FH-RNTI), wherein the FH-RNTI isassociated with the control component.

Aspect 13: The method of any of Aspects 1-4, wherein the wirelesscontrol interface comprises an out-of-band control interface.

Aspect 14: The method of Aspect 13, wherein the first signal is receivedusing a first frequency, and wherein control messages are received viathe control interface using a second frequency that is different thanthe first frequency.

Aspect 15: The method of Aspect 14, wherein the second frequency islower than the first frequency.

Aspect 16: The method of any of Aspects 1-15, wherein the controlcomponent is based at least in part on a Long Term Evolution narrow bandInternet-of-Things user equipment.

Aspect 17: The method of any of Aspects 1-16, wherein the controlcomponent is based at least in part on a New Radio sub-6 reducedcapability user equipment.

Aspect 18: The method of any of Aspects 1-17, wherein the controlcomponent is based on a user equipment (UE) specification that specifiesa plurality of functions supported by the UE, and wherein the controlcomponent does not support all of the plurality of functions.

Aspect 19: The method of any of Aspects 1-18, wherein the first signalis received using a first radio access technology (RAT), and whereincontrol messages are received via the control interface using a secondRAT that is different than the first RAT.

Aspect 20: The method of any of Aspects 1-19, wherein the configurationis carried in a control message comprising at least one of: alower-layer control message, an upper-layer control message, or anapplication-layer control message.

Aspect 21: The method of any of Aspects 1-20, further comprisingreceiving, from the control node, a control message that indicates atleast one of: a reception beamforming configuration associated with thefirst signal, a reception time domain resource associated with the firstsignal, a transmission beamforming configuration associated withtransmitting the second signal, or a transmission time domain resourceassociated with transmitting the second signal.

Aspect 22: The method of Aspect 21, wherein the reception beamformingconfiguration indicates an index associated with a beamforming codebook.

Aspect 23: The method of either of Aspects 21 or 22, wherein thereception beamforming configuration indicates at least one of: a phasesetting of an antenna element of the digital repeater, or an amplitudesetting of the antenna element of the digital repeater.

Aspect 24: The method of any of Aspects 21-23, further comprisingtransmitting a control message to the control node, wherein the controlmessage indicates a beamforming capability of the digital repeater,wherein the reception beamforming configuration is based at least inpart on the beamforming capability.

Aspect 25: The method of any of Aspects 21-24, wherein the transmissiontime domain resource is indicated relative to the reception time domainresource.

Aspect 26: The method of any of Aspects 21-25, wherein the transmissiontime domain resource is based at least in part on a synchronizationcharacteristic corresponding to a synchronization mode between thedigital repeater and the control node.

Aspect 27: The method of Aspect 26, wherein the synchronizationcharacteristic indicates a synchronous mode between the digital repeaterand the control node, and wherein the transmission time domain resourceis based at least in part on an indication of the reception time domainresource, wherein the indication of the reception time domain resourceindicates at least one of: a symbol identifier, a slot identifier, or aframe identifier.

Aspect 28: The method of Aspect 26, wherein the synchronizationcharacteristic indicates an asynchronous mode between the digitalrepeater and the control node, and wherein the transmission time domainresource is based at least in part on an indication of a reference timedomain resource, wherein the indication of the reference time domainresource indicates at least one of: a symbol identifier, a slotidentifier, or a frame identifier.

Aspect 29: The method of Aspect 28, further comprising transmitting,using the control component, an additional control message to thecontrol node, wherein the reference time domain resource corresponds tothe additional control message.

Aspect 30: The method of Aspect 26, wherein the synchronizationcharacteristic indicates an out-of-sync synchronization mode between thedigital repeater and the control node, and wherein the transmission timedomain resource is based at least in part on a reference time domainresource, wherein the reference time domain resource corresponds to theconfiguration.

Aspect 31: The method of any of Aspects 1-30, further comprisingtransmitting a control message to the control node, wherein the controlmessage includes one or more information elements (IEs), the one or moreIEs indicating at least one of: an operation supported by the digitalrepeater, a beamforming codebook characteristic, a beamformingcapability, a transmitter power configuration, a timing configuration, abuffer status, an analog-to-digital converter (ADC) configuration, anADC setting, a digital-to-analog converter (DAC) configuration, a DACsetting, an in-phase and quadrature (IQ) sample compression capability,an IQ sample decompression capability, an IQ sample compression setting,or an IQ sample decompression setting.

Aspect 32: The method of Aspect 31, wherein the beamforming codebookcharacteristic indicates at least one of: a number of transmitter beamsavailable, a number of receiver beams available, a spatial quasico-location characteristic associated with a beam, a number of antennaarrays, a number of antenna panels, an association between a beam and anantenna array, or an association between a beam and an antenna panel.

Aspect 33: The method of either of Aspects 31 or 32, wherein thetransmitter power configuration indicates at least one of: a powerheadroom, a maximum transmitter power, a maximum gain level, a currentgain setting, or a current transmitter power.

Aspect 34: The method of any of Aspects 31-33, wherein the timingconfiguration indicates at least one of: a level of synchronizationbetween the digital repeater and the control node, a synchronousoperation supported by the digital repeater, or an asynchronousoperation supported by the digital repeater.

Aspect 35: The method of any of Aspects 31-34, wherein the buffer statusindicates at least one of: an available memory, a maximum buffer size,or a buffer overflow.

Aspect 36: The method of any of Aspects 1-35, wherein the first signalcomprises at least one of: a physical downlink control channeltransmission, a physical downlink shared channel transmission, aphysical uplink control channel transmission, a physical uplink sharedchannel transmission, or an acknowledgement or negative acknowledgementfeedback message.

Aspect 37: The method of any of Aspects 1-36, wherein the digitalprocessing operation comprises a digital processing option selected froma plurality of digital processing options.

Aspect 38: The method of Aspect 37, wherein the digital processingoption is based at least in part on at least one of: time domainin-phase and quadrature (IQ) sample buffering, tone extraction, resourceelement extraction, channel estimation and equalization, or decoding thefirst signal.

Aspect 39: The method of any of Aspects 1-38, wherein the configurationcomprises at least one control information element (IE), the at leastone control IE indicating: a reception configuration, a bufferingconfiguration, a forwarding configuration, or an information request.

Aspect 40: The method of Aspect 39, wherein the reception configurationindicates at least one of: a reception analog beamforming configuration,a time domain resource associated with the first signal, a frequencydomain resource associated with the first signal, a numerologyassociated with the first signal, a digital receiver beamformingconfiguration, resource element (RE) mapping information associated withthe first signal, a channel estimation configuration, a scramblingidentifier associated with the first signal, or a coding configurationassociated with the first signal.

Aspect 41: The method of Aspect 40, wherein the frequency domainresource associated with the first signal comprises at least one of: acenter frequency, a bandwidth, or a bandwidth part.

Aspect 42: The method of either of Aspects 40 or 41, wherein thenumerology associated with the first signal comprises at least one of: acyclic prefix size, a subcarrier spacing, or a fast Fourier transformsize.

Aspect 43: The method of any of Aspects 40-42, wherein the RE mappinginformation associated with the first signal comprises a plurality ofindices corresponding to a plurality of occupied tones associated withthe first signal.

Aspect 44: The method of any of Aspects 40-43, wherein the channelestimation configuration indicates at least one of: a resourceassociated with a reference signal, or a configuration associated withthe reference signal.

Aspect 45: The method of any of Aspects 40-44, wherein the codingconfiguration indicates at least one of: a modulation and coding scheme,or a coding technique.

Aspect 46: The method of any of Aspects 39-45, wherein the bufferingconfiguration indicates at least one of: an analog-to-digital converter(ADC) setting, a digital-to-analog converter (DAC) setting, an IQ samplecompression setting, or an IQ sample decompression setting.

Aspect 47: The method of Aspect 46, wherein the ADC setting comprises atleast one of: an ADC resolution, or a sample rate.

Aspect 48: The method of any of Aspects 39-47, wherein the forwardingconfiguration comprises at least one of: a transmission beamformingconfiguration, a time domain resource associated with transmitting thesecond signal, a transmission power setting, a transmissionamplification setting, a transmission center frequency, a numerologyassociated with transmitting the second signal, a digital transmitterbeamforming configuration, resource element (RE) mapping informationassociated with transmitting the second signal, a layer mappingconfiguration, a precoding configuration, a scrambling identifierassociated with transmitting the second signal, or a codingconfiguration associated with transmitting the second signal.

Aspect 49: The method of Aspect 48, wherein the numerology associatedwith forwarding the first signal comprises at least one of: a cyclicprefix size, a subcarrier spacing, or a fast Fourier transform size.

Aspect 50: The method of either of Aspects 48 or 49, wherein the REmapping information associated with forwarding the first signalcomprises a plurality of indices corresponding to a plurality ofoccupied tones associated with transmitting the second signal.

Aspect 51: The method of any of Aspects 39-50, wherein the informationrequest comprises a request for at least one of: a buffer status, apower status, a measurement report, a capability of the digitalrepeater, or a configuration of the digital repeater.

Aspect 52: The method of Aspect 51, wherein the request for the powerstatus comprises a request for a power headroom of the digital repeater.

Aspect 53: The method of either of Aspects 51 or 52, wherein the requestfor the measurement report comprises a request for a signal qualitymeasurement.

Aspect 54: The method of any of Aspects 1-53, further comprisingtransmitting a periodic report to the control node, wherein the periodicreport indicates at least one of: a capability of the digital repeater,or a configuration of the digital repeater.

Aspect 55: A method of wireless communication performed by a controlnode, comprising: determining a configuration for a repeating operationthat facilitates forwarding a first signal from a first wireless node toa second wireless node, wherein the configuration indicates a digitalprocessing operation for regenerating the first signal to create asecond signal, wherein the digital processing operation comprises adigital processing option selected from a plurality of digitalprocessing options; and transmitting the configuration to a controlcomponent of a digital repeater via a wireless control interface.

Aspect 56: The method of Aspect 55, wherein the first signal comprises amillimeter wave wireless signal.

Aspect 57: The method of either of Aspects 55 or 56, wherein theconfiguration indicates a beamforming configuration for at least one ofreceiving the first signal or transmitting the second signal.

Aspect 58: The method of any of Aspects 55-57, wherein the digitalprocessing operation is configured to facilitate extraction of aplurality of tones from the first signal.

Aspect 59: The method of any of Aspects 55-58, wherein the wirelesscontrol interface comprises an in-band control interface.

Aspect 60: The method of any of Aspects 55-59, further comprisingreceiving at least one control message from the digital repeater,wherein the at least one control message indicates at least one of: aconfiguration of the digital repeater, a capability of the digitalrepeater, or a status of the digital repeater.

Aspect 61: The method of any of Aspects 55-60, further comprisingestablishing an access link with the control component of the controlnode.

Aspect 62: The method of any of Aspects 55-61, further comprisingtransmitting, to the digital repeater, a bandwidth part (BWP)configuration that indicates a BWP corresponding to the wireless controlinterface.

Aspect 63: The method of any of Aspects 55-62, wherein the configurationis carried by a control message comprising at least one of: downlinkcontrol information, a radio resource control message, or a mediumaccess control (MAC) control element.

Aspect 64: The method of any of Aspects 55-63, wherein the configurationis carried in a front haul physical downlink control channel (FH-PDCCH)control message.

Aspect 65: The method of Aspect 64, wherein the FH-PDCCH control messagecomprises downlink control information scrambled by a front haul radionetwork temporary identifier (FH-RNTI), wherein the FH-RNTI isassociated with the control component.

Aspect 66: The method of any of Aspects 55-58, wherein the wirelesscontrol interface comprises an out-of-band control interface.

Aspect 67: The method of any of Aspects 55-66, wherein the controlcomponent is based at least in part on a Long Term Evolution narrow bandInternet-of-Things user equipment.

Aspect 68: The method of any of Aspects 55-67, wherein the controlcomponent is based at least in part on a New Radio sub-6 reducedcapability user equipment.

Aspect 69: The method of any of Aspects 55-68, wherein the controlcomponent is based on a user equipment (UE) specification that specifiesa plurality of functions supported by the UE, and wherein the controlcomponent does not support all of the plurality of functions.

Aspect 70: The method of any of Aspects 55-69, wherein the configurationis carried in a control message comprising at least one of: alower-layer control message, an upper-layer control message, or anapplication-layer control message.

Aspect 71: The method of any of Aspects 55-70, further comprisingtransmitting, to the digital repeater, a control message that indicatesat least one of: a reception beamforming configuration associated withthe first signal, a reception time domain resource associated with thefirst signal, a transmission beamforming configuration associated withtransmitting the second signal, or a transmission time domain resourceassociated with transmitting the second signal.

Aspect 72: The method of Aspect 71, wherein the reception beamformingconfiguration indicates an index associated with a beamforming codebook.

Aspect 73: The method of either of Aspects 71 or 72, wherein thereception beamforming configuration indicates at least one of: a phasesetting of an antenna element of the digital repeater, or an amplitudesetting of the antenna element of the digital repeater.

Aspect 74: The method of any of Aspects 55-73, further comprisingreceiving a control message from the digital repeater, wherein thecontrol message indicates a beamforming capability of the digitalrepeater, wherein the reception beamforming configuration is based atleast in part on the beamforming capability.

Aspect 75: The method of any of Aspects 71-74, wherein the transmissiontime domain resource is indicated relative to the reception time domainresource.

Aspect 76: The method of any of Aspects 71-75, wherein the transmissiontime domain resource is based at least in part on a synchronizationcharacteristic corresponding to a synchronization mode between thedigital repeater and the control node.

Aspect 77: The method of Aspect 76, wherein the synchronizationcharacteristic indicates a synchronous mode between the digital repeaterand the control node, and wherein the transmission time domain resourceis based at least in part on an indication of the reception time domainresource, wherein the indication of the reception time domain resourceindicates at least one of: a symbol identifier, a slot identifier, or aframe identifier.

Aspect 78: The method of Aspect 76, wherein the synchronizationcharacteristic indicates an asynchronous mode between the digitalrepeater and the control node, and wherein the transmission time domainresource is based at least in part on an indication of a reference timedomain resource, wherein the indication of the reference time domainresource indicates at least one of: a symbol identifier, a slotidentifier, or a frame identifier.

Aspect 79: The method of Aspect 78, further comprising receiving, fromthe control component, an additional control message, wherein thereference time domain resource corresponds to the additional controlmessage.

Aspect 80: The method of Aspect 76, wherein the synchronizationcharacteristic indicates an out-of-sync synchronization mode between thedigital repeater and the control node, and wherein the transmission timedomain resource is based at least in part on a reference time domainresource, wherein the reference time domain resource corresponds to theconfiguration.

Aspect 81: The method of any of Aspects 55-80, further comprisingreceiving a control message from the digital repeater, wherein thecontrol message includes one or more information elements (IEs), the oneor more IEs indicating at least one of: an operation supported by thedigital repeater, a beamforming codebook characteristic, a beamformingcapability, a transmitter power configuration, a timing configuration, abuffer status, an analog-to-digital converter (ADC) configuration, anADC setting, a digital-to-analog converter (DAC) configuration, a DACsetting, an in-phase and quadrature (IQ) sample compression capability,an IQ sample decompression capability, an IQ sample compression setting,or an IQ sample decompression setting.

Aspect 82: The method of Aspect 81, wherein the beamforming codebookcharacteristic indicates at least one of: a number of transmitter beamsavailable, a number of receiver beams available, a spatial quasico-location characteristic associated with a beam, a number of antennaarrays, a number of antenna panels, an association between a beam and anantenna array, or an association between a beam and an antenna panel.

Aspect 83: The method of either of Aspects 81 or 82, wherein thetransmitter power configuration indicates at least one of: a powerheadroom, a maximum transmitter power, a maximum gain level, a currentgain setting, or a current transmitter power.

Aspect 84: The method of any of Aspects 81-83, wherein the timingconfiguration indicates at least one of: a level of synchronizationbetween the digital repeater and the control node, a synchronousoperation supported by the digital repeater, or an asynchronousoperation supported by the digital repeater.

Aspect 85: The method of any of Aspects 81-84, wherein the buffer statusindicates at least one of: an available memory, a maximum buffer size,or a buffer overflow.

Aspect 86: The method of any of Aspects 55-85, wherein the first signalcomprises at least one of: a physical downlink control channeltransmission, a physical downlink shared channel transmission, aphysical uplink control channel transmission, a physical uplink sharedchannel transmission, or an acknowledgement or negative acknowledgementfeedback message.

Aspect 87: The method of any of Aspects 55-86, wherein the digitalprocessing operation comprises a digital processing option selected froma plurality of digital processing options.

Aspect 88: The method of Aspect 87, wherein the digital processingoption is based at least in part on at least one of: time domainin-phase and quadrature (IQ) sample buffering, tone extraction, resourceelement extraction, channel estimation and equalization, or decoding thefirst signal.

Aspect 89: The method of any of Aspects 55-88, wherein the configurationcomprises at least one control information element (IE), the at leastone control IE indicating: a reception configuration, a bufferingconfiguration, a forwarding configuration, or an information request.

Aspect 90: The method of Aspect 89, wherein the reception configurationindicates at least one of: a reception analog beamforming configuration,a time domain resource associated with the first signal, a frequencydomain resource associated with the first signal, a numerologyassociated with the first signal, a digital receiver beamformingconfiguration, resource element (RE) mapping information associated withthe first signal, a channel estimation configuration, a scramblingidentifier associated with the first signal, or a coding configurationassociated with the first signal.

Aspect 91: The method of Aspect 90, wherein the frequency domainresource associated with the first signal comprises at least one of: acenter frequency, a bandwidth, or a bandwidth part.

Aspect 92: The method of either of Aspects 90 or 91, wherein thenumerology associated with the first signal comprises at least one of: acyclic prefix size, a subcarrier spacing, or a fast Fourier transformsize.

Aspect 93: The method of any of Aspects 90-92, wherein the RE mappinginformation associated with the first signal comprises a plurality ofindices corresponding to a plurality of occupied tones associated withthe first signal.

Aspect 94: The method of any of Aspects 90-93, wherein the channelestimation configuration indicates at least one of: a resourceassociated with a reference signal, or a configuration associated withthe reference signal.

Aspect 95: The method of any of Aspects 90-94, wherein the codingconfiguration indicates at least one of: a modulation and coding scheme,or a coding technique.

Aspect 96: The method of any of Aspects 90-95, wherein the bufferingconfiguration indicates at least one of: an analog-to-digital converter(ADC) setting, a digital-to-analog converter (DAC) setting, an IQ samplecompression setting, or an IQ sample decompression setting.

Aspect 97: The method of Aspect 96, wherein the ADC setting comprises atleast one of: an ADC resolution, or a sample rate.

Aspect 98: The method of any of Aspects 90-97, wherein the forwardingconfiguration comprises at least one of: a transmission beamformingconfiguration, a time domain resource associated with transmitting thesecond signal, a transmission power setting, a transmissionamplification setting, a transmission center frequency, a numerologyassociated with transmitting the second signal, a digital transmitterbeamforming configuration, resource element (RE) mapping informationassociated with transmitting the second signal, a layer mappingconfiguration, a precoding configuration, a scrambling identifierassociated with transmitting the second signal, or a codingconfiguration associated with transmitting the second signal.

Aspect 99: The method of Aspect 98, wherein the numerology associatedwith forwarding the first signal comprises at least one of: a cyclicprefix size, a subcarrier spacing, or a fast Fourier transform size.

Aspect 100: The method of either of Aspects 98 or 99, wherein the REmapping information associated with forwarding the first signalcomprises a plurality of indices corresponding to a plurality ofoccupied tones associated with transmitting the second signal.

Aspect 101: The method of any of Aspects 90-100, wherein the informationrequest comprises a request for at least one of: a buffer status, apower status, a measurement report, a capability of the digitalrepeater, or a configuration of the digital repeater.

Aspect 102: The method of Aspect 101, wherein the request for the powerstatus comprises a request for a power headroom of the digital repeater.

Aspect 103: The method of either of Aspects 101 or 102, wherein therequest for the measurement report comprises a request for a signalquality measurement.

Aspect 104: The method of any of Aspects 55-103, further comprisingreceiving a periodic report from the digital repeater, wherein theperiodic report indicates at least one of: a capability of the digitalrepeater, or a configuration of the digital repeater.

Aspect 105: The method of any of Aspects 55-104, further comprisingcommunicating with a wireless node, via the digital repeater, based atleast in part on the configuration.

Aspect 106: An apparatus for wireless communication at a device,comprising a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to perform the method of one or more of Aspects1-54.

Aspect 107: A device for wireless communication, comprising a memory andone or more processors coupled to the memory, the one or more processorsconfigured to perform the method of one or more of Aspects 1-54.

Aspect 108: An apparatus for wireless communication, comprising at leastone means for performing the method of one or more of Aspects 1-54.

Aspect 109: A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable by aprocessor to perform the method of one or more of Aspects 1-54.

Aspect 110: A non-transitory computer-readable medium storing a set ofinstructions for wireless communication, the set of instructionscomprising one or more instructions that, when executed by one or moreprocessors of a device, cause the device to perform the method of one ormore of Aspects 1-54.

Aspect 111: An apparatus for wireless communication at a device,comprising a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to perform the method of one or more of Aspects55-105.

Aspect 112: A device for wireless communication, comprising a memory andone or more processors coupled to the memory, the one or more processorsconfigured to perform the method of one or more of Aspects 55-105.

Aspect 113: An apparatus for wireless communication, comprising at leastone means for performing the method of one or more of Aspects 55-105.

Aspect 114: A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable by aprocessor to perform the method of one or more of Aspects 55-105.

Aspect 115: A non-transitory computer-readable medium storing a set ofinstructions for wireless communication, the set of instructionscomprising one or more instructions that, when executed by one or moreprocessors of a device, cause the device to perform the method of one ormore of Aspects 55-105.

The foregoing disclosure provides illustration and description, but isnot intended to be exhaustive or to limit the aspects to the preciseforms disclosed. Modifications and variations may be made in light ofthe above disclosure or may be acquired from practice of the aspects.

As used herein, the term “component” is intended to be broadly construedas hardware, firmware, and/or a combination of hardware and software. Asused herein, a processor is implemented in hardware, firmware, and/or acombination of hardware and software. It will be apparent that systemsand/or methods described herein may be implemented in different forms ofhardware, firmware, and/or a combination of hardware and software. Theactual specialized control hardware or software code used to implementthese systems and/or methods is not limiting of the aspects. Thus, theoperation and behavior of the systems and/or methods were describedherein without reference to specific software code—it being understoodthat software and hardware can be designed to implement the systemsand/or methods based, at least in part, on the description herein.

As used herein, satisfying a threshold may, depending on the context,refer to a value being greater than the threshold, greater than or equalto the threshold, less than the threshold, less than or equal to thethreshold, equal to the threshold, not equal to the threshold, or thelike.

Even though particular combinations of features are recited in theclaims and/or disclosed in the specification, these combinations are notintended to limit the disclosure of various aspects. In fact, many ofthese features may be combined in ways not specifically recited in theclaims and/or disclosed in the specification. Although each dependentclaim listed below may directly depend on only one claim, the disclosureof various aspects includes each dependent claim in combination withevery other claim in the claim set. As used herein, a phrase referringto “at least one of” a list of items refers to any combination of thoseitems, including single members. As an example, “at least one of: a, b,or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well asany combination with multiples of the same element (e.g., a-a, a-a-a,a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or anyother ordering of a, b, and c).

No element, act, or instruction used herein should be construed ascritical or essential unless explicitly described as such. Also, as usedherein, the articles “a” and “an” are intended to include one or moreitems and may be used interchangeably with “one or more.” Further, asused herein, the article “the” is intended to include one or more itemsreferenced in connection with the article “the” and may be usedinterchangeably with “the one or more.” Furthermore, as used herein, theterms “set” and “group” are intended to include one or more items (e.g.,related items, unrelated items, or a combination of related andunrelated items), and may be used interchangeably with “one or more.”Where only one item is intended, the phrase “only one” or similarlanguage is used. Also, as used herein, the terms “has,” “have,”“having,” or the like are intended to be open-ended terms. Further, thephrase “based on” is intended to mean “based, at least in part, on”unless explicitly stated otherwise. Also, as used herein, the term “or”is intended to be inclusive when used in a series and may be usedinterchangeably with “and/or,” unless explicitly stated otherwise (e.g.,if used in combination with “either” or “only one of”).

What is claimed is:
 1. A method of wireless communication performed by adigital repeater, comprising: receiving, using a control component ofthe digital repeater, a configuration that indicates a digitalprocessing operation, wherein the control component receives theconfiguration from a control node via a wireless control interface;receiving a first signal; performing, using a repeating component of thedigital repeater, the digital processing operation on the first signalto generate a second signal, wherein the second signal comprises are-generated version of the first signal; and transmitting the secondsignal.
 2. The method of claim 1, wherein the configuration indicates abeamforming configuration for at least one of receiving the first signalor transmitting the second signal.
 3. The method of claim 1, wherein thewireless control interface comprises an in-band control interface,wherein the first signal is received using a frequency, and whereincontrol messages are received via the in-band control interface usingthe frequency.
 4. The method of claim 1, further comprising transmittingat least one control message to the control node, wherein the at leastone control message indicates at least one of: a configuration of thedigital repeater, a capability of the digital repeater, or a status ofthe digital repeater.
 5. The method of claim 1, further comprisingestablishing, using the control component and a frequency, an accesslink to the control node.
 6. The method of claim 1, further comprisingreceiving a bandwidth part (BWP) configuration that indicates a BWPcorresponding to the wireless control interface.
 7. The method of claim1, wherein the configuration is carried by a control message comprisingat least one of: downlink control information, a radio resource controlmessage, or a medium access control (MAC) control element.
 8. The methodof claim 1, wherein the configuration is carried in a front haulphysical downlink control channel (FH-PDCCH) control message.
 9. Themethod of claim 1, wherein the wireless control interface comprises anout-of-band control interface, wherein the first signal is receivedusing a first frequency, and wherein control messages are received viathe control interface using a second frequency that is different thanthe first frequency, and wherein the second frequency is lower than thefirst frequency.
 10. The method of claim 1, wherein the controlcomponent is based at least in part on at least one of a Long TermEvolution narrow band Internet-of-Things user equipment or a New Radiosub-6 reduced capability user equipment.
 11. The method of claim 1,wherein the control component is based on a user equipment (UE)specification that specifies a plurality of functions supported by theUE, and wherein the control component does not support all of theplurality of functions.
 12. The method of claim 1, wherein the firstsignal is received using a first radio access technology (RAT), andwherein control messages are received via the control interface using asecond RAT that is different than the first RAT.
 13. The method of claim1, wherein the configuration is carried in a control message comprisingat least one of: a lower-layer control message, an upper-layer controlmessage, or an application-layer control message.
 14. The method ofclaim 1, further comprising receiving, from the control node, a controlmessage that indicates at least one of: a reception beamformingconfiguration associated with the first signal, a reception time domainresource associated with the first signal, a transmission beamformingconfiguration associated with transmitting the second signal, or atransmission time domain resource associated with transmitting thesecond signal.
 15. The method of claim 14, further comprisingtransmitting a control message to the control node, wherein the controlmessage indicates a beamforming capability of the digital repeater,wherein the reception beamforming configuration is based at least inpart on the beamforming capability.
 16. The method of claim 14, whereinthe transmission time domain resource is indicated relative to thereception time domain resource.
 17. The method of claim 14, wherein thetransmission time domain resource is based at least in part on asynchronization characteristic corresponding to a synchronization modebetween the digital repeater and the control node.
 18. The method ofclaim 17, wherein the synchronization characteristic indicates asynchronous mode between the digital repeater and the control node, andwherein the transmission time domain resource is based at least in parton an indication of the reception time domain resource, wherein theindication of the reception time domain resource indicates at least oneof: a symbol identifier, a slot identifier, or a frame identifier. 19.The method of claim 17, wherein the synchronization characteristicindicates an asynchronous mode between the digital repeater and thecontrol node, and wherein the transmission time domain resource is basedat least in part on an indication of a reference time domain resource,wherein the indication of the reference time domain resource indicatesat least one of: a symbol identifier, a slot identifier, or a frameidentifier.
 20. The method of claim 17, wherein the synchronizationcharacteristic indicates an out-of-sync synchronization mode between thedigital repeater and the control node, and wherein the transmission timedomain resource is based at least in part on a reference time domainresource, wherein the reference time domain resource corresponds to theconfiguration.
 21. The method of claim 1, further comprisingtransmitting a control message to the control node, wherein the controlmessage includes one or more information elements (IEs), the one or moreIEs indicating at least one of: an operation supported by the digitalrepeater, a beamforming codebook characteristic, a beamformingcapability, a transmitter power configuration, a timing configuration, abuffer status, an analog-to-digital converter (ADC) configuration, anADC setting, a digital-to-analog converter (DAC) configuration, a DACsetting, an in-phase and quadrature (IQ) sample compression capability,an IQ sample decompression capability, an IQ sample compression setting,or an IQ sample decompression setting.
 22. The method of claim 21,wherein the timing configuration indicates at least one of: a level ofsynchronization between the digital repeater and the control node, asynchronous operation supported by the digital repeater, or anasynchronous operation supported by the digital repeater.
 23. The methodof claim 1, wherein the configuration comprises at least one controlinformation element (IE), the at least one control IE indicating: areception configuration, a buffering configuration, a forwardingconfiguration, or an information request.
 24. The method of claim 23,wherein the information request comprises a request for at least one of:a buffer status, a power status, a measurement report, a capability ofthe digital repeater, or a configuration of the digital repeater. 25.The method of claim 24, wherein the request for the power statuscomprises a request for a power headroom of the digital repeater. 26.The method of claim 24, wherein the request for the measurement reportcomprises a request for a signal quality measurement.
 27. The method ofclaim 1, further comprising transmitting a periodic report to thecontrol node, wherein the periodic report indicates at least one of: acapability of the digital repeater, or a configuration of the digitalrepeater.
 28. A method of wireless communication performed by a controlnode, comprising: determining a configuration for a repeating operationthat facilitates forwarding a first signal from a first wireless node toa second wireless node, wherein the configuration indicates a digitalprocessing operation for regenerating the first signal to create asecond signal, wherein the digital processing operation comprises adigital processing option selected from a plurality of digitalprocessing options; and transmitting the configuration to a controlcomponent of a digital repeater via a wireless control interface.
 29. Adigital repeater for wireless communication, comprising: a memory; andone or more processors coupled to the memory, the memory and the one ormore processors configured to: receive, using a control component of thedigital repeater, a configuration that indicates a digital processingoperation, wherein the control component receives the configuration froma control node via a wireless control interface; receive a first signal;perform, using a repeating component of the digital repeater, thedigital processing operation on the first signal to generate a secondsignal, wherein the second signal comprises a re-generated version ofthe first signal; and transmit the second signal.
 30. A control node forwireless communication, comprising: a memory; and one or more processorscoupled to the memory, the memory and the one or more processorsconfigured to: determine a configuration for a repeating operation thatfacilitates forwarding a first signal from the control node to awireless node, wherein the configuration indicates a digital processingoperation for regenerating the first signal to create a second signal,wherein the digital processing operation comprises a digital processingoption selected from a plurality of digital processing options; andtransmit the configuration to a control component of a digital repeatervia a wireless control interface.